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figure.sr-nlf-fig.sr-nlf-fig--square img{width:100%;max-height:none}\n.sr-nlf-2026 ul.sr-nlf-specs li.sr-nlf-li-media{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;align-items:start}\n@media(min-width:641px){.sr-nlf-2026 ul.sr-nlf-specs li.sr-nlf-li-media>figure.sr-nlf-fig--li{display:grid;grid-template-columns:112px minmax(0,1fr);gap:12px;align-items:center}.sr-nlf-2026 ul.sr-nlf-specs li.sr-nlf-li-media>figure.sr-nlf-fig--li figcaption{margin:0}}\n.sr-nlf-2026 ul.sr-nlf-specs li.sr-nlf-li-media>span{display:block;min-width:0}\n.sr-nlf-2026 ul.sr-nlf-specs li.sr-nlf-li-media>figure.sr-nlf-fig--li{margin:0;padding:8px}\n.sr-nlf-2026 figure.sr-nlf-fig--li img{width:100%;max-height:none}\n.sr-nlf-2026 figure.sr-nlf-fig--li figcaption{font-size:11px;line-height:1.5;margin:8px 1px 0}\n@media(max-width:640px){.sr-nlf-2026 ul.sr-nlf-specs li.sr-nlf-li-media{grid-template-columns:minmax(0,1fr);gap:12px}.sr-nlf-2026 ul.sr-nlf-specs li.sr-nlf-li-media>figure.sr-nlf-fig--li{max-width:260px;width:100%;margin:0 auto}}\n.sr-nlf-2026 .sr-atlas-card figure.sr-nlf-cardphoto.sr-nlf-cardphoto--wide{max-width:200px}\n.sr-nlf-2026 .sr-atlas-card figure.sr-nlf-cardphoto--wide img.sr-atlas-photo{width:200px;height:auto;aspect-ratio:1317\/670;max-width:100%}\n.sr-nlf-2026 .sr-atlas-card figure.sr-nlf-cardphoto--wide figcaption{max-width:200px}\n@media(max-width:480px){.sr-nlf-2026 .sr-atlas-card figure.sr-nlf-cardphoto--wide{float:none;max-width:200px;margin:0 0 12px}}\n.sr-nlf-2026 #workflow ol+figure.sr-nlf-fig{margin-top:18px}\n@media(min-width:1025px){.sr-nlf-2026 #methodology .sr-nlf-t-sensitivity th:first-child,.sr-nlf-2026 #methodology .sr-nlf-t-sensitivity td:first-child{width:250px;min-width:250px}}\n@media(min-width:768px){.sr-nlf-2026 .sr-nlf-stillclip>figure.sr-nlf-clip{padding:14px}.sr-nlf-2026 .sr-nlf-stillclip>figure.sr-nlf-clip figcaption{margin-top:12px}}\n.sr-nlf-2026 .sr-atlas-card h3{flex-wrap:nowrap;align-items:baseline}.sr-nlf-2026 .sr-atlas-card h3>em{flex:0 0 auto}\n@media(min-width:901px){.sr-nlf-2026 .sr-table-wrap caption{padding:10px 14px 8px}}\n@media(max-width:640px){body.postid-37687 .sr-nlf-2026 .sr-final-cta .sr-nlf-buy a.sr-buy-cta{min-width:152px}}\n<\/style>\n<div class=\"sr-mast\">\n<p class=\"sr-deck\">For piriform fossa and nasolabial fold filler I pick the Suresult L20Pro at {{SRX_PRICE:31250}} for one fixed order: map the facial and angular arteries on Doppler at each planned point, place the product in the plane that clears them, then rescan. One 16\/20 MHz probe holds every depth this work reaches: the angular artery 3.6 mm under the skin over the deep pyriform space, the facial artery at pooled means of 6.27 mm at the jaw to 8.04 mm at the ala and 23.5 mm down at its deepest in single faces, and the supraperiosteal plane 9.11 mm down, with Color, Power and PW Doppler in the price. The facial artery keeps no fixed line along the fold: it runs medial to the fold in 46.2% of 610 Doppler-mapped arteries, crosses it from medial to lateral in 22.5% and from lateral to medial in 18.5%, and runs lateral in 12.0% (Pourani 2025), and over the deep pyriform space the angular artery lies within 3 mm of the bone in 38.6% of hemifaces (Franceschelli 2024). Below are the artery course by level, the deep pyriform space, piriform fossa filler volumes, the fold&#8217;s filler labels, the workflow and six scanners ranked.<\/p>\n<div class=\"sr-author-meta\"><span><b>Updated<\/b> November 3, 2026<\/span><\/div>\n<section aria-label=\"Reviewed by Suresult clinical authors\" class=\"srx-author-panel sr-author-panel\">\n<p class=\"srx-author-kicker\">Written and clinically reviewed by<\/p>\n<div class=\"srx-author-list\">\n<article class=\"srx-author-card sr-author-card\" data-sr-author=\"fernando-mariz-md\"><span aria-label=\"Verified author\" class=\"srx-verified-badge\"><svg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M3.5 8.4l2.9 2.9 6.1-6.6\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><\/span><img loading=\"eager\" decoding=\"async\" width=\"72\" height=\"72\" alt=\"Fernando Mariz, MD\" class=\"srx-author-portrait\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/fernando-mariz-md-author-avatar.png\"\/><\/p>\n<div>\n<p class=\"srx-author-name\">Fernando Mariz, MD<\/p>\n<p class=\"srx-author-role\">Gynecology, pelvic surgery, women\u2019s health and sonography<\/p>\n<\/div>\n<details class=\"srx-author-details\">\n<summary>About Dr. Mariz<\/summary>\n<p>I\u2019m Dr. Fernando Mariz, a gynecology and pelvic surgery physician practicing in New York City. Before my medical career, I served in the U.S. Marine Corps, where I developed the discipline, focus, and steadiness that continue to shape the way I care for patients today. At Maiden Lane Medical, my work covers women\u2019s health, preventive care, sonography, pelvic pain, abnormal uterine bleeding, and minimally invasive gynecologic procedures.<\/p>\n<p class=\"srx-author-links\"><a href=\"https:\/\/maidenlanemedical.com\/profile\/fernando-mariz-md\/\" rel=\"noopener noreferrer nofollow\" target=\"_blank\">Maiden Lane Medical profile<\/a> \u00b7 <a href=\"https:\/\/weillcornell.org\/\" rel=\"noopener noreferrer nofollow\" target=\"_blank\">Weill Cornell Medicine<\/a><\/p>\n<\/details>\n<\/article>\n<article class=\"srx-author-card sr-author-card\" data-sr-author=\"jailyn-avila-md\"><span aria-label=\"Verified author\" class=\"srx-verified-badge\"><svg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M3.5 8.4l2.9 2.9 6.1-6.6\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><\/span><img loading=\"eager\" decoding=\"async\" width=\"72\" height=\"72\" alt=\"Jailyn Avila, MD\" class=\"srx-author-portrait\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/jailyn-avila-md-author-avatar.png\"\/><\/p>\n<div>\n<p class=\"srx-author-name\">Jailyn Avila, MD<\/p>\n<p class=\"srx-author-role\">Emergency medicine, POCUS education and digital health<\/p>\n<\/div>\n<details class=\"srx-author-details\">\n<summary>About Dr. Avila<\/summary>\n<p>I\u2019m Dr. Jailyn Avila, an emergency medicine physician, educator, and digital health innovator based in Southern California. My clinical work is rooted in emergency care, while my teaching focuses on point-of-care ultrasound, residency education, and practical training for physicians. Through my roles with Emergent Medical Associates, UHS SoCal MEC Emergency Medicine Residency, Core Ultrasound, and FemInEM, I work at the intersection of patient care, medical education, and accessible digital learning.<\/p>\n<p class=\"srx-author-links\"><a href=\"https:\/\/jailynavila.com\/\" rel=\"noopener noreferrer nofollow\" target=\"_blank\">jailynavila.com<\/a> \u00b7 <a href=\"https:\/\/feminem.org\/\" rel=\"noopener noreferrer nofollow\" target=\"_blank\">FemInEM<\/a><\/p>\n<\/details>\n<\/article>\n<\/div>\n<\/section>\n<div class=\"sr-evalscope\" id=\"evaluation-scope\" data-sr-reviewer-scope>\n<p><strong>Evaluation scope:<\/strong> I review ultrasound equipment as an independent device reviewer with deep ultrasound knowledge. For this page I traced every anatomy and technique figure to its primary paper, read the FDA labels of the hyaluronic acid fillers indicated for the fold, and scored 12 instruments from six makers on seven criteria fixed on October 31, 2026, before a single rival score existed: the Suresult L20Pro with the L24Pro, L20, L24, L14Pro and L14, the Clarius L20 HD3 with its L15 HD3 sibling, the Mindray TE Air e5M, the Butterfly iQ3, the GE Vscan Air SL and the Philips Lumify L12-4. Maker pages, datasheets and US stores were read on October 28 to 31, 2026, every rival price was rechecked on October 31, and PubMed, PMC and the FDA device databases were searched on October 31.<\/p>\n<\/div>\n<\/div>\n<section id=\"quick-answer\">\n<h2>Quick answer: which ultrasound should you buy for piriform fossa and nasolabial fold filler?<\/h2>\n<div class=\"sr-quick-answer\">\n<p><strong>The Suresult L20Pro ({{SRX_PRICE:31250}}) is the scanner I recommend for piriform fossa and nasolabial fold filler, at 95.0\/100 in my six-maker ranking.<\/strong> At 20 MHz on its 10 mm preset it resolves the angular artery 3.6 mm under the skin and the facial artery at its pooled mean depths of 6.27 to 8.04 mm from the jaw to the ala; at 16 MHz its 20, 30 and 40 mm presets take in the bone under the deep pyriform space, 9.11 to 11.4 mm down, and the facial artery&#8217;s deepest course, 23.5 mm beside the ala. Color, Power and PW Doppler, Needle Enhance and the in-plane and out-of-plane guides come with the probe, and imaging carries no subscription. FaceAtlas AI, 3 months included, maps 21 points with one on each nasolabial fold, reads skin, fat and SMAS depth in millimeters and names seven filler materials. Five years with the lifetime FaceAtlas AI license, sold until 11:59 PM PT, December 31, 2026, total {{SRX_TOTAL:P31250+S36383}}.<\/p>\n<p>The Clarius L20 HD3 ranks second at 75.0: 8\u201320 MHz to 4 cm, a preset named Pyriform, Color and Power Doppler included, with PW Doppler, Needle Enhance and Vessel Depth AI unlocked by an Essentials membership.<\/p>\n<\/div>\n<\/section>\n<section id=\"comparison\">\n<h2>Piriform fossa and nasolabial fold scanners compared: six handhelds side by side<\/h2>\n<p>Side by side, the six ranked scanners split on four things the fold and the fossa demand: a top frequency at or above the 15 MHz facial floor, Doppler that tells a 1.4 mm angular artery from its vein, a needle or cannula view in the plane, and what the software behind each scored tool costs over five years.<\/p>\n<div class=\"sr-table-wrap sr-comp\" data-sr-primary-buyer-table>\n<table id=\"table-equipment\">\n<caption>Six scanners for piriform fossa and nasolabial fold filler, ranked; prices and plans checked October 31, 2026; the lifetime FaceAtlas AI license is sold until 11:59 PM PT, December 31, 2026.<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Scanner<\/th>\n<th scope=\"col\">Top frequency \u00b7 depth<\/th>\n<th scope=\"col\">Doppler<\/th>\n<th scope=\"col\">Mapping and safety software<\/th>\n<th scope=\"col\">Needle and cannula tools<\/th>\n<th scope=\"col\">Cine, storage and export<\/th>\n<th scope=\"col\">Five-year cost and subscription<\/th>\n<th scope=\"col\">Best for<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-label=\"Scanner\"><span class=\"sr-nlf-device\" data-sr-model=\"Suresult L20Pro\"><img class=\"sr-cmp-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-l20pro.webp\" alt=\"Suresult L20Pro wireless linear ultrasound probe with tablet\" width=\"1000\" height=\"1000\"><span><b><a href=\"#rank-1\">Suresult L20Pro<\/a><\/b> \u00b7 No. 1 \u00b7 95.0\/100<\/span><\/span><\/td>\n<td data-label=\"Top frequency \u00b7 depth\">20 MHz on a 16\/20 MHz linear \u00b7 presets 10, 20, 30 and 40 mm<\/td>\n<td data-label=\"Doppler\">Color, Power and PW, all with the probe<\/td>\n<td data-label=\"Mapping and safety software\">FaceAtlas AI, 3 months included: 21-point map with a point on each nasolabial fold; skin, fat and SMAS depth in mm; seven filler materials named<\/td>\n<td data-label=\"Needle and cannula tools\">Needle Enhance; in-plane and out-of-plane puncture guides<\/td>\n<td data-label=\"Cine, storage and export\">Cine of 1,000 frames, about 165 s; local storage; DICOM export<\/td>\n<td data-label=\"Five-year cost and subscription\"><a href=\"https:\/\/suresultmed.com\/shop\/handheld-ultrasounds\/l20pro-16-20mhz-high-frequency-linear-probe-ultrasound\/\">{{SRX_TOTAL:P31250+S36383}}<\/a> with the one-time lifetime FaceAtlas AI license; imaging and Doppler need no subscription<\/td>\n<td data-label=\"Best for\">Both arteries and every plane from dermis to bone on one probe<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Scanner\"><span class=\"sr-nlf-device\" data-sr-model=\"Clarius L20 HD3\"><img class=\"sr-cmp-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-clarius-l20-v2.webp\" alt=\"Clarius L20 HD3 ultrasound probe\" width=\"800\" height=\"800\"><span><b><a href=\"#rank-2\">Clarius L20 HD3<\/a><\/b> \u00b7 No. 2 \u00b7 75.0\/100<\/span><\/span><\/td>\n<td data-label=\"Top frequency \u00b7 depth\">20 MHz on an 8\u201320 MHz linear \u00b7 to 4 cm<\/td>\n<td data-label=\"Doppler\">Color and Power with the scanner; PW with Essentials<\/td>\n<td data-label=\"Mapping and safety software\">Vessel Depth AI (Essentials); Auto Aesthetic Calipers; Pyriform and Lips presets<\/td>\n<td data-label=\"Needle and cannula tools\">Needle Enhance (Essentials); Center Guide<\/td>\n<td data-label=\"Cine, storage and export\">Cine of 30 s; Essentials adds storage and DICOM<\/td>\n<td data-label=\"Five-year cost and subscription\"><a href=\"https:\/\/store.clarius.com\/products\/l20-hd3-handheld-ultrasound-scanner\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">$7,895<\/a> ($5,395 plus Essentials as a one-time $2,500 license; $695 a year on the annual plan)<\/td>\n<td data-label=\"Best for\">A named Pyriform preset with vessel depth on screen<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Scanner\"><span class=\"sr-nlf-device\" data-sr-model=\"Mindray TE Air e5M\"><img class=\"sr-cmp-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-mindray-te-air-e5m.webp\" alt=\"Mindray TE Air e5M wireless probe with its tablet\" width=\"1317\" height=\"670\"><span><b><a href=\"#rank-3\">Mindray TE Air e5M<\/a><\/b> \u00b7 No. 3 \u00b7 58.5\/100<\/span><\/span><\/td>\n<td data-label=\"Top frequency \u00b7 depth\">8.2 MHz top linear B-mode band (2.0\u20139.0 MHz bandwidth) \u00b7 to 40 cm<\/td>\n<td data-label=\"Doppler\">Color, Power and PW, all standard<\/td>\n<td data-label=\"Mapping and safety software\">Smart Calc for vessel diameter and area<\/td>\n<td data-label=\"Needle and cannula tools\">iNeedle; VA Grid<\/td>\n<td data-label=\"Cine, storage and export\">2\u20135 s cine; JPG and MP4; DICOM 3.0<\/td>\n<td data-label=\"Five-year cost and subscription\"><a href=\"https:\/\/mindrayna.my.site.com\/teair\/product-details?c__productId=01tPq00000GISELIA5\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">$4,499<\/a> one-time, every scored tool in the price with no subscription<\/td>\n<td data-label=\"Best for\">All three Doppler modes at the lowest five-year rival cost<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Scanner\"><span class=\"sr-nlf-device\" data-sr-model=\"GE Vscan Air SL\"><img class=\"sr-cmp-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-ge-vscan-air-sl-v2.webp\" alt=\"GE Vscan Air SL ultrasound probe\" width=\"800\" height=\"800\"><span><b><a href=\"#rank-4\">GE Vscan Air SL<\/a><\/b> \u00b7 No. 4 \u00b7 48.4\/100<\/span><\/span><\/td>\n<td data-label=\"Top frequency \u00b7 depth\">12 MHz on a 3\u201312 MHz linear \u00b7 to 8 cm<\/td>\n<td data-label=\"Doppler\">Color and PW in the purchase<\/td>\n<td data-label=\"Mapping and safety software\">Caption AI, AutoEF and other AI tools in the paid Innovations plan<\/td>\n<td data-label=\"Needle and cannula tools\">Centerline Marker<\/td>\n<td data-label=\"Cine, storage and export\">Up to 500 exams on the phone or tablet; DICOM export<\/td>\n<td data-label=\"Five-year cost and subscription\"><a href=\"https:\/\/www.gehealthcare.com\/en-us\/shop\/equipment\/vscan-air-sl\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">$4,999<\/a> one-time, every scored tool in the price with no subscription<\/td>\n<td data-label=\"Best for\">Color and PW with the scored tools in one price<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Scanner\"><span class=\"sr-nlf-device\" data-sr-model=\"Butterfly iQ3\"><img class=\"sr-cmp-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-butterfly-iq3.webp\" alt=\"Butterfly iQ3 ultrasound probe\" width=\"333\" height=\"800\"><span><b><a href=\"#rank-5\">Butterfly iQ3<\/a><\/b> \u00b7 No. 5 \u00b7 45.7\/100<\/span><\/span><\/td>\n<td data-label=\"Top frequency \u00b7 depth\">12 MHz (1\u201312 MHz) \u00b7 to 30 cm; Vascular: Superficial at 1\u20134 cm<\/td>\n<td data-label=\"Doppler\">Color on Core; Power and PW on Advanced<\/td>\n<td data-label=\"Mapping and safety software\">Auto B-Lines and Auto Bladder Volume (Advanced)<\/td>\n<td data-label=\"Needle and cannula tools\">Needle Viz and Biplane (Advanced); Midline Tool<\/td>\n<td data-label=\"Cine, storage and export\">Unlimited cloud storage; Basic DICOM sold separately<\/td>\n<td data-label=\"Five-year cost and subscription\"><a href=\"https:\/\/www.butterflynetwork.com\/pricing\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">$5,399<\/a> ($3,899 plus Advanced as a one-time $1,500 for five years)<\/td>\n<td data-label=\"Best for\">One whole-body probe with biplane needle views<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Scanner\"><span class=\"sr-nlf-device\" data-sr-model=\"Philips Lumify L12-4\"><img class=\"sr-cmp-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-philips-l12-4-v2.webp\" alt=\"Philips Lumify L12-4 ultrasound probe\" width=\"800\" height=\"800\"><span><b><a href=\"#rank-6\">Philips Lumify L12-4<\/a><\/b> \u00b7 No. 6 \u00b7 43.6\/100<\/span><\/span><\/td>\n<td data-label=\"Top frequency \u00b7 depth\">12 MHz (12\u20134 MHz) \u00b7 to 12 cm<\/td>\n<td data-label=\"Doppler\">Color with Fast Flow and Slow Flow; PW<\/td>\n<td data-label=\"Mapping and safety software\">B-line detection for lung imaging<\/td>\n<td data-label=\"Needle and cannula tools\">Center line marker<\/td>\n<td data-label=\"Cine, storage and export\">Loops of 1\u201310 s; email, DICOM to PACS or a network folder<\/td>\n<td data-label=\"Five-year cost and subscription\"><a href=\"https:\/\/www.partssource.com\/parts\/philips\/453561734017\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">$10,307.95<\/a> outright at PartsSource; all software included without a required plan<\/td>\n<td data-label=\"Best for\">Clinics that already run Lumify transducers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"sr-table-note\">Each five-year figure is the handheld plus the software tier that unlocks every scored tool: for Suresult the lifetime FaceAtlas AI license that follows the 3 included months, for Clarius the one-time Essentials license, for Butterfly five years of Advanced, with Basic DICOM sold separately outside the total. Mindray, GE and Philips put the scored tools in the purchase. The full arithmetic sits under the five-year cost section, and the weights in the scoring method.<\/p>\n<\/section>\n<section id=\"picks\">\n<h2>Best for: quick picks<\/h2>\n<ul class=\"sr-nlf-picks\" data-suresult-quick-list=\"\">\n<li><strong>Best Overall for Piriform Fossa and Nasolabial Fold Filler:<\/strong> <a href=\"#rank-1\">Suresult L20Pro<\/a>, 95.0\/100. 20 MHz for the vessels along the fold, 16 MHz to 40 mm for the bone and the deep cheek, three Doppler modes and Needle Enhance with the probe, and FaceAtlas AI for the first 3 months.<\/li>\n<li><strong>Best for a Pyriform Preset and Vessel Depth AI at 20 MHz:<\/strong> <a href=\"#rank-2\">Clarius L20 HD3<\/a>, 75.0\/100. A preset named Pyriform and a live depth readout of the shallowest vessel on Power Doppler and CFI, with Essentials.<\/li>\n<li><strong>Best for Color, Power and PW Doppler at the Lowest Five-Year Rival Cost:<\/strong> <a href=\"#rank-3\">Mindray TE Air e5M<\/a>, 58.5\/100. All three Doppler modes, iNeedle and the VA Grid in the purchase, on a linear mode whose B-mode bands run to 8.2 MHz.<\/li>\n<li><strong>Best for Color and PW Doppler With Every Scored Tool in the Price:<\/strong> <a href=\"#rank-4\">GE Vscan Air SL<\/a>, 48.4\/100. A 3\u201312 MHz linear to 8 cm with Color, PW and the Centerline Marker, no tier required.<\/li>\n<li><strong>Best for One Whole-Body Probe With Biplane Needle Views:<\/strong> <a href=\"#rank-5\">Butterfly iQ3<\/a>, 45.7\/100. One CMUT chip from 1 to 12 MHz, with Biplane and Needle Viz in Advanced.<\/li>\n<li><strong>Best for Clinics Already Running Lumify Transducers:<\/strong> <a href=\"#rank-6\">Philips Lumify L12-4<\/a>, 43.6\/100. A 12\u20134 MHz linear with Fast Flow and Slow Flow color and PW, every software feature in the outright purchase.<\/li>\n<\/ul>\n<\/section>\n<section id=\"buy\">\n<h2>Where to buy each scanner<\/h2>\n<ul class=\"sr-buy-list\">\n<li><strong>Suresult L20Pro:<\/strong> {{SRX_PRICE:31250}} at the Suresult store. FaceAtlas AI comes with 3 months; after that one key costs {{SRX_STORE:36381}} a month, {{SRX_STORE:36382}} a year or {{SRX_STORE:36383}} for the life of the device, a lifetime option sold until 11:59 PM PT, December 31, 2026. Delivery is duties paid, with a 30-day worry-free trial and a 2-year warranty. <a class=\"sr-nlf-buy-primary\" href=\"\/shop\/handheld-ultrasounds\/l20pro-16-20mhz-high-frequency-linear-probe-ultrasound\/\">Order the Suresult L20Pro linear probe at {{SRX_PRICE:31250}}<\/a><\/li>\n<li><strong>Clarius L20 HD3:<\/strong> $5,395 at the Clarius store, checked October 31, 2026. PW Doppler, Needle Enhance, Vessel Depth AI, storage and DICOM need Essentials, sold as a one-time $2,500 license, $695 a year or $1,785 every three years. <a class=\"sr-nlf-buy-secondary\" href=\"https:\/\/store.clarius.com\/products\/l20-hd3-handheld-ultrasound-scanner\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Clarius L20 HD3 at the Clarius store<\/a><\/li>\n<li><strong>Mindray TE Air e5M:<\/strong> $4,499 at the Mindray North America TE Air store, checked October 31, 2026, with iNeedle, iTouch+, Smart Calc, iWorks and iScanHelper among the listed contents and a 3-year warranty; the Air Capsule for wireless charging is a $750 option. <a class=\"sr-nlf-buy-secondary\" href=\"https:\/\/mindrayna.my.site.com\/teair\/product-details?c__productId=01tPq00000GISELIA5\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TE Air e5M at the Mindray store<\/a><\/li>\n<li><strong>GE Vscan Air SL:<\/strong> $4,999.00 at the GE HealthCare US shop, or $4,299.00 as a demo unit, checked October 31, 2026, with the standard 3-year warranty; the Innovations plan, at $500 a year or $1,299 for 3 years, adds Caption AI and the other AI tools. <a class=\"sr-nlf-buy-secondary\" href=\"https:\/\/www.gehealthcare.com\/en-us\/shop\/equipment\/vscan-air-sl\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Vscan Air SL at the GE HealthCare shop<\/a><\/li>\n<li><strong>Butterfly iQ3:<\/strong> $3,899 with a 3-year warranty at Butterfly Network, checked October 31, 2026. Color comes with the Core plan at $299 a year; Power, PW, Needle Viz and Biplane come with Advanced at $420 a year or $1,500 for five years. <a class=\"sr-nlf-buy-secondary\" href=\"https:\/\/www.butterflynetwork.com\/pricing\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Butterfly iQ3 plans and pricing<\/a><\/li>\n<li><strong>Philips Lumify L12-4:<\/strong> Philips sells it through its sales team; PartsSource lists a new unit at $10,307.95 outright, checked October 31, 2026, with a 90-day warranty. <a class=\"sr-nlf-buy-secondary\" href=\"https:\/\/www.partssource.com\/parts\/philips\/453561734017\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Lumify L12-4 at PartsSource<\/a><\/li>\n<\/ul>\n<\/section>\n<section id=\"why-map\">\n<h2>Why map the nasolabial fold and the piriform fossa before filler?<\/h2>\n<p>Mapping the fold and the fossa before filler matters because the nasolabial fold is the third most frequent site in the published reports of skin necrosis and vision loss after filler: of 164 cases gathered from 45 articles, 44.5% followed injection of the nose, 21% the glabella, 15% the nasolabial fold and 10% the forehead (Rauso 2020). Occlusion signs and the steps that follow one are set out in the <a href=\"\/vascular-occlusion-filler\/\">vascular occlusion guide<\/a>. The map comes before any of that: the facial and angular arteries located at the exact points you plan to inject, on each side.<\/p>\n<p>The 2025 international Delphi consensus on ultrasound in aesthetic injectables lists the pyriform fossa among the five areas where vascular mapping is mandatory, with the forehead, glabella, temple and nose, and recommends mapping for the lips, lower eyelids, zygomatic arch, chin and pre-auricular region. The same panel recommends ultrasound-guided injection in the pyriform fossa, a linear probe of at least 15 MHz and a check for earlier filler before new product goes in, and makes image archiving mandatory (Velthuis 2025). Gonzalez 2026 recommends imaging for the forehead, glabella, nose and pyriform fossa. The map earns its place quickly: across 503 patients mapped before HA filler, an artery wider than 0.8 mm lay under 43 of 324 planned nasolabial fold sites, 13.2%, and each map took under 3 minutes (Teixeira 2025).<\/p>\n<\/section>\n<section id=\"anatomy\">\n<h2>Nasolabial fold anatomy and the facial artery course from the jaw to the ala<\/h2>\n<p>Nasolabial fold anatomy, read from the surface down, is skin, a subdermal fascial-fatty layer that runs from the upper lip across the fold into the cheek mass (Yousif 1994), mimetic muscle fibers that send dermal extensions into the crease (Barton 1997) and fat compartments that behave differently on each side of it, with the facial artery threading through these layers at a depth that changes from the jaw to the ala. In the upper lip the SMAS is the superficial part of the orbicularis oris (Yousif 1994). The skin at the fold measures 1.601 \u00b1 0.617 mm on high-frequency ultrasound, the epidermis 0.325 mm and the dermis 1.276 mm, the thinnest epidermis of the eight facial sites measured in 99 adults with an L18-5 linear at a 15 mm image depth (Jeong 2023). Under the skin the fold scans as a hypoechoic subcutis over the levator labii superioris alaeque nasi and the levator anguli oris, both hypoechoic too (Vasconcelos-Berg 2024).<\/p>\n<p>The fat beside the fold sits in separate compartments. The nasolabial fat is a compartment of its own with fixed boundaries (Rohrich 2007); deeper in the cheek, the deep medial cheek fat has a medial part against the pyriform membrane and a lateral part on the maxilla, and its volume loss deepens the fold (Rohrich 2008). Product follows the compartment it lands in. In the superficial nasolabial compartment it moves downward as the volume grows (rp = 0.92, p = 0.003; Schenck 2018), while the deep pyriform space, the deep medial cheek fat and the deep nasolabial compartment inside the premaxillary space take volume with no inferior displacement, and deep filler on the bone projects the tissue forward (40 specimens; Cotofana 2019). Hong 2024 sorts folds into three types: a paranasal depression (type 1), a sagging nasolabial fat pad (type 2) and a crease pulled by the lip elevators (type 3), with fibers of the levator labii superioris alaeque nasi, the levator labii superioris and the zygomaticus inserting into the skin beside the nose. With age the pyriform aperture widens from young to middle age in both sexes (Shaw 2007), and the maxilla resorbs, the lower pyriform rim most of all (Mendelson 2012).<\/p>\n<p>The facial artery course along the fold falls into four types in a Doppler meta-analysis of 610 arteries: medial to the fold (type A) in 46.2%, crossing it from medial to lateral (type C) in 22.5%, crossing from lateral to medial (type D) in 18.5% and lateral to it (type B) in 12.0% (Pourani 2025). Type A is the most symmetric between the two sides and type D the most asymmetric, and type B turns up about twice as often in a cadaver series as on Doppler, 23.2% against 12.0% (Yang 2014; Pourani 2025). Single series swing around the pooled shares: color Doppler of 376 arteries in 188 patients found type A in 55.7%, with the course asymmetric between sides in most patients and more often in women, 54.3% (Boz 2024), and ultrasound typing of 45 patients found individual variation in the course in 38% (Hong 2026). Map each side on its own.<\/p>\n<p>The layer changes too. In 80 Doppler-mapped folds the artery ran lateral to the fold in 31%; where it passed under the fold it lay subdermal in 13%, subcutaneous in 29%, within the muscle in 24% and submuscular in 4%, and the filler went into whichever layer bypassed it (Lee W 2021). In 60 specimens from 36 cadavers the artery sat 3.2 \u00b1 4.5 mm lateral to the ala and 13.5 \u00b1 5.4 mm lateral to the commissure, crossed the fold in 33.9%, came within 5 mm of it in 42.9% and sent detoured branches in 30.0% (Yang 2014). CT angiography of 255 arteries put it medial to the fold in 65.5% and fully lateral in 12.3% (Koziej 2019), and in 52 cadavers it continued as the angular artery in 83.7% (Peng 2024).<\/p>\n<figure class=\"sr-nlf-fig sr-nlf-fig--square\" id=\"figure-pourani-fig2\" data-sr-media=\"pourani-fig2\"><a href=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-pourani-fig2.webp\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" loading=\"eager\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-pourani-fig2.webp\" alt=\"Four drawn faces showing the facial artery running medial to the nasolabial fold, lateral to it, or across it in types A to D\" width=\"709\" height=\"708\"><\/a><figcaption>The four courses of the facial artery against the nasolabial fold, drawn on four faces: type A medial (46.2%), type B lateral (12.0%), type C crossing from medial to lateral (22.5%) and type D crossing from lateral to medial (18.5%). Figure 2 from Pourani MR, Ebrahimzade M, Goudarzi E, et al. J Cosmet Dermatol 2025;24(9):e70431. doi:10.1111\/jocd.70431. <a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\" target=\"_blank\">CC BY 4.0<\/a>.<\/figcaption><\/figure>\n<div class=\"sr-table-wrap sr-comp sr-nlf-t-course sr-nlf-stack sr-nlf-incidence sr-nlf-incidence--labelled\">\n<table id=\"table-course\">\n<caption>The facial artery along the fold on Doppler, with one all-modality pooling for comparison: depth from the skin, layer, caliber and neighbors.<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Level<\/th>\n<th scope=\"col\">Depth from the skin<\/th>\n<th scope=\"col\">Layer, caliber and neighbors<\/th>\n<th scope=\"col\">Source<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-label=\"Level\"><b>Mandibular border<\/b><\/td>\n<td data-label=\"Depth from the skin\">6.27 mm pooled mean (402 arteries); 6.8 mm right and 6.4 mm left at 22\u20138 MHz; shallowest 2.5 mm, deepest 15.0 mm<\/td>\n<td data-label=\"Layer, caliber and neighbors\">Diameter 2.14 mm pooled; the facial vein runs lateral to the artery on 41 of 41 right sides and 38 of 40 left, 8.2 mm deep on the right<\/td>\n<td data-label=\"Source\">Pourani 2025; Pistoia 2023; Ten 2021<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Level\"><b>Cheilion, beside the mouth corner<\/b><\/td>\n<td data-label=\"Depth from the skin\">7.95 mm pooled mean (397 arteries); 6.1 mm right and 6.3 mm left; shallowest 3.7 mm, deepest 18.7 mm<\/td>\n<td data-label=\"Layer, caliber and neighbors\">Subcutis over the buccinator; diameter 1.71 mm pooled, 1.40 mm in a 66-hemiface series<\/td>\n<td data-label=\"Source\">Pourani 2025; Pistoia 2023; Ten 2021; Shen 2023<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Level\"><b>Lateral ala and alar base<\/b><\/td>\n<td data-label=\"Depth from the skin\">8.04 mm pooled mean (389 arteries); 4.3 mm right and 4.6 mm left; shallowest 3.7 mm, deepest 23.5 mm<\/td>\n<td data-label=\"Layer, caliber and neighbors\">Subcutis under the alar base, over the maxilla; diameter 1.46 mm pooled, 1.32 mm in the 66-hemiface series<\/td>\n<td data-label=\"Source\">Pourani 2025; Pistoia 2023; Ten 2021; Shen 2023<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Level\"><b>Along the fold, handheld 8\u201320 MHz<\/b><\/td>\n<td data-label=\"Depth from the skin\">3.4 \u00b1 0.6 mm in 10 subjects<\/td>\n<td data-label=\"Layer, caliber and neighbors\">Read on a handheld linear<\/td>\n<td data-label=\"Source\">Shetty 2024<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Level\"><b>Every modality pooled, 12 papers<\/b><\/td>\n<td data-label=\"Depth from the skin\">9.72 mm at the cheilion (794 arteries), 10.34 mm mid-fold (514), 9.21 mm at the ala (1,095)<\/td>\n<td data-label=\"Layer, caliber and neighbors\">Cadaver, CT and ultrasound series together<\/td>\n<td data-label=\"Source\">Trzeciak 2025<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Read together, the depths set the scan window. The pooled Doppler means sit 6 to 8 mm down, in the lower half of a 10 mm image, yet single faces range from 2.5 mm at the jaw to 23.5 mm beside the ala, and the authors of that 168-hemiface series conclude that no depth and no region of the fold is absolutely safe (Ten 2021). The caliber narrows from 2.14 mm at the jaw to 1.46 mm at the ala, and Doppler found the artery at 100%, 99.9% and 99.8% of the three levels (Pourani 2025). At 22\u20138 MHz its cross-section shrank from 2.2 mm\u00b2 at the mandible to 1.1\u20131.2 mm\u00b2 at the alar base, and on the left side it showed at the cheilion in 39 of 41 volunteers and at the alar base in 37 of 41 (Pistoia 2023). The whole-face artery depths, temple to chin, are in the <a href=\"\/ultrasound-guided-filler-injections\/\">ultrasound-guided filler injections guide<\/a>.<\/p>\n<figure class=\"sr-nlf-fig\" id=\"figure-vasconcelos-fig9\" data-sr-media=\"vasconcelos-fig9\"><a href=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-vasconcelos-fig9.webp\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-vasconcelos-fig9.webp\" alt=\"Two color Doppler ultrasound panels of the nasolabial fold showing the facial artery in the subcutaneous fat and changing plane beside a lip elevator muscle\" width=\"718\" height=\"408\"><\/a><figcaption>The fold on longitudinal color Doppler at 18 MHz: (a) the facial artery in the subcutaneous fat over the piriform space and the maxilla, under the labeled epidermis and dermis; (b) the artery changing plane beside the levator labii superioris alaeque nasi. Figure 9, both panels, from Vasconcelos-Berg R, Desyatnikova S, Bonavia P, et al. Diagnostics 2024;14:2544. doi:10.3390\/diagnostics14222544. <a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\" target=\"_blank\">CC BY 4.0<\/a>.<\/figcaption><\/figure>\n<p>At the commissure the facial artery gives off the superior labial artery, and the lip carries its own arteries, depths and injection points, all in the <a href=\"\/lip-filler-technique-ultrasound\/\">lip filler technique guide<\/a>. Upward from the mouth corner, the facial artery ends as the angular artery in 71.8% of 234 arteries and as the lateral nasal artery in 27.9% (Pourani 2025).<\/p>\n<\/section>\n<section id=\"deep-pyriform\">\n<h2>The angular artery over the deep pyriform space<\/h2>\n<p>The angular artery runs in the roof of the deep pyriform space, inside the septum between the space and the deep medial cheek fat, above the bone where pyriform filler is placed (Surek 2016). In 12 cadaver hemifaces the space averaged 1.1 \u00d7 0.9 cm: the depressor septi nasi bounds it medially, the deep medial cheek fat and the lip elevators cradle it laterally and superficially in a half-moon, and it extends upward to the level of the tear trough ligament in a plane deep to the premaxillary space. On 20 MHz Doppler in 166 volunteers the angular artery lay 3.6 \u00b1 1.7 mm under the skin and 5.1 \u00b1 2.9 mm above the bone, with the supraperiosteal plane 9.11 \u00b1 2.4 mm from the skin, and it was found in the space in 94.9% of 332 hemifaces (Franceschelli 2024). That study scanned patients semi-seated, with the probe vertical at the angle between the ala and the cheek, on thick gel without touching the skin.<\/p>\n<div class=\"sr-nlf-stillclip\">\n<figure class=\"sr-nlf-fig sr-nlf-fig--portrait\" data-sr-media=\"wp:36706\"><a href=\"https:\/\/suresultmed.com\/wp-content\/uploads\/suresult-aesthetic-reel-191-angular-artery-at-the-nasolabial-fold-poster.webp\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/suresult-aesthetic-reel-191-angular-artery-at-the-nasolabial-fold-poster.webp\" alt=\"Color Doppler ultrasound at 20 MHz of the angular artery at the nasolabial fold with calipers reading 4.0 and 4.6 mm\" width=\"900\" height=\"1600\"><\/a><figcaption>Suresult L20 band at 20 MHz, 30 mm depth, Color Doppler: the vessel labeled &#8220;Angular Art.&#8221; at the nasolabial fold, calipers reading 4.0 and 4.6 mm, PRF 1.6K and wall filter 7.<\/figcaption><\/figure>\n<figure class=\"sr-nlf-clip\" data-sr-clip=\"reel-191-recheck-v1\" data-sr-media=\"reel-191-angular-artery\"><video controls preload=\"none\" playsinline poster=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-reel-191-angular-artery-poster.webp\" width=\"1080\" height=\"1920\"><source src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-reel-191-angular-artery.mp4\" type=\"video\/mp4\"><\/video><figcaption>Suresult L20 band at 20 MHz, 30 mm depth: B-mode with the layers labeled skin, superficial fat, angular artery, deep fat and bone, then the same window in Color with the artery measured.<\/figcaption><\/figure>\n<\/div>\n<div class=\"sr-table-wrap sr-comp sr-nlf-t-bone sr-nlf-compact\">\n<table id=\"table-bone\">\n<caption>How far the angular artery lies from the bone of the deep pyriform space, 332 hemifaces on 20 MHz Doppler.<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Angular artery to bone<\/th>\n<th scope=\"col\">Hemifaces<\/th>\n<th scope=\"col\">Share<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-label=\"Angular artery to bone\"><b>More than 3 mm<\/b><\/td>\n<td data-label=\"Hemifaces\">187<\/td>\n<td data-label=\"Share\">56.3%<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Angular artery to bone\"><b>2 to 3 mm<\/b><\/td>\n<td data-label=\"Hemifaces\">71<\/td>\n<td data-label=\"Share\">21.4%<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Angular artery to bone\"><b>1 to 2 mm<\/b><\/td>\n<td data-label=\"Hemifaces\">47<\/td>\n<td data-label=\"Share\">14.2%<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Angular artery to bone\"><b>1 mm or less<\/b><\/td>\n<td data-label=\"Hemifaces\">8<\/td>\n<td data-label=\"Share\">2.4%<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Angular artery to bone\"><b>Practically on the bone, recorded as 0.1 mm<\/b><\/td>\n<td data-label=\"Hemifaces\">2<\/td>\n<td data-label=\"Share\">0.6%<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Angular artery to bone\"><b>Not found in the space<\/b><\/td>\n<td data-label=\"Hemifaces\">17<\/td>\n<td data-label=\"Share\">5.1%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Within 3 mm of the bone in 38.6% of hemifaces, the artery sits where a supraperiosteal deposit would meet it, and the same authors keep boluses and supraperiosteal injections out of those hemifaces and count a negative aspiration as no test of safety (Franceschelli 2024). A second Doppler series in 58 adults, 116 sides, measured the artery on a 4\u201316 MHz linear with a surface preset: B-mode at 10\u201313.5 MHz, Doppler at 5.0 MHz, PRF 0.5\u20130.8 kHz, a 30 mm depth and 300 frames per second, the probe longitudinal between the ala and the anterior maxilla with its marker perpendicular to the ala, the patient supine, generous gel and no compression (Bustamante 2025). The artery measured 1.4 mm across in women and men alike, losing 0.01 mm per year of age; it lay 4.8 \u00b1 1.6 mm under the skin in women and 5.8 \u00b1 1.7 mm in men, 3.9 and 4.2 mm above the bone, with the bone 10.1 and 11.4 mm down. A pulsatile spectral trace, peaking at 21.1 cm\/s in women and 19.2 cm\/s in men with a resistive index of 0.9, told it from the angular vein; each examination took about 15 minutes, and the two examiners agreed at an ICC of 0.891 to 0.967.<\/p>\n<p>The angular artery takes four forms in 57 cadaver hemifaces: a persistent pattern along the side of the nose (11%), a detouring pattern across the cheek and tear trough (18%), an alternative pattern reaching the medial canthus through a branch of the ophthalmic artery (22.8%) and a latent pattern with the angular artery absent (26.3%) (Kim 2014). On 18 MHz color Doppler in 43 people the angular artery was absent in 11.62% (Khorasanizadeh 2023). Over the frontal process of the maxilla, lateral to the pyriform aperture, a 5\u201312 MHz study measured the angular artery at 1.39 mm across, with a peak systolic velocity of 20.73 cm\/s and a resistive index of 0.65 (Tucunduva 2016). At the ala, CT of 156 faces placed the main arterial trunk 13.7 \u00b1 3.7 mm deep and under the levator labii superioris alaeque nasi in 53.6% (Gombolevskiy 2021).<\/p>\n<p>Medial to the deep pyriform space lies the perialar space, dissected in 44 cadaver hemifaces: the levator labii superioris forms its lateral wall, the alar fibrofatty tissue its medial wall and the transverse nasalis its roof (Yoon 2026). Yoon&#8217;s puncture sits 1 cm along a perpendicular from the midpoint of the fold; a 21G needle opens the track and a 23G 50 mm cannula fills the space with 0.5 to 1 cc per space. Beside it, the premaxillary space is semi-open between bony and muscular borders, and 0.5 to 0.8 mL placed there improved the nasolabial groove in Thiel-embalmed cadavers (Pilsl 2014).<\/p>\n<\/section>\n<section id=\"piriform\">\n<h2>Piriform fossa filler: the injection point, the plane on bone and the volumes<\/h2>\n<p>Piriform fossa filler goes on the bone 0.3 to 0.5 cm lateral to the ala: scan the point with Doppler first, move it until no artery sits under the needle, then pass a 27G needle at 90 degrees to the periosteum, aspirate and inject slowly into the supraperiosteal plane (Vasconcelos-Berg 2024). The same guide uses this needle technique for severe volume loss in the fossa. The bony landmark gives the area its second spelling, so pyriform fossa filler and the piriform spelling name one treatment at one site: the paranasal hollow over the pyriform aperture beside the ala. The map comes first because the angular artery runs 3.6 mm under the skin there and lies 1 mm or less from the bone in 2.4% of hemifaces and practically on it, at 0.1 mm, in another 0.6%, right where the needle tip stops (Franceschelli 2024).<\/p>\n<div class=\"sr-table-wrap sr-comp sr-nlf-t-volumes sr-nlf-stack sr-nlf-incidence sr-nlf-incidence--labelled\">\n<table id=\"table-volumes\">\n<caption>Piriform fossa and paranasal filler volumes by plane or space, from the published protocols.<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Plane or space<\/th>\n<th scope=\"col\">Volume<\/th>\n<th scope=\"col\">Tool and entry<\/th>\n<th scope=\"col\">Source<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-label=\"Plane or space\"><b>Supraperiosteal at the upper fold (NL1), for bone deficiency<\/b><\/td>\n<td data-label=\"Volume\">0.3 mL per side<\/td>\n<td data-label=\"Tool and entry\">Needle; aspirate on the bone<\/td>\n<td data-label=\"Source\">de Maio 2021 (MD Codes)<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Plane or space\"><b>Perialar space<\/b><\/td>\n<td data-label=\"Volume\">0.5\u20131 cc per space<\/td>\n<td data-label=\"Tool and entry\">21G pilot needle, then a 23G 50 mm cannula<\/td>\n<td data-label=\"Source\">Yoon 2026<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Plane or space\"><b>Premaxillary space<\/b><\/td>\n<td data-label=\"Volume\">0.5\u20130.8 mL<\/td>\n<td data-label=\"Tool and entry\">Cadaver injection with a CT check<\/td>\n<td data-label=\"Source\">Pilsl 2014<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Plane or space\"><b>Layered, from the deep pyriform space to the subdermis<\/b><\/td>\n<td data-label=\"Volume\">0.03\u20130.05 mL per thread; 1.0\u20131.5 mL per side<\/td>\n<td data-label=\"Tool and entry\">25G puncture at the commissure; blunt cannula, retrograde threads and fans<\/td>\n<td data-label=\"Source\">Jung 2020<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Layering treats the rest of the fold from one entry. Jung 2020 worked through the triangle between the alar base and the commissure in 20 patients with no complications: a 25G puncture at the commissure, then a blunt cannula threaded retrograde into the deep pyriform space on the periosteum, next the supraperiosteal and deep fat planes with linear threads and fans, and last the superficial fat and the subdermal plane, at 0.03 to 0.05 mL per thread and 1.0 to 1.5 mL per side, with 2 units of toxin per side to the levator labii superioris alaeque nasi when that muscle pulls hard. The deep compartments hold their place as volume rises (Cotofana 2019) and the superficial nasolabial compartment slides downward (Schenck 2018); Hong 2026 layered in the same order, deep first and superficial second, under real-time ultrasound. Peng 2024 recommends supraperiosteal injection in the upper third of the fold and the dermal layer in the lower two thirds, Lee W 2023 puts high-G\u2032 HA on the periosteum once the map is done, and Ramos 2025 pairs HA in an empty deep pyriform space with abobotulinumtoxinA in the nasal muscles.<\/p>\n<\/section>\n<section id=\"fold-technique\">\n<h2>Nasolabial fold injection: filler technique by product, point and plane<\/h2>\n<p>In the nasolabial fold filler technique, a nasolabial fold injection places the product at up to three points per side, NL1 to NL3 in the MD Codes protocol, in the plane that its US label and the point call for, by needle or cannula, after Doppler has mapped the facial and angular arteries at each point. Each filler below was approved by the FDA through premarket approval (PMA) for moderate to severe facial wrinkles and folds such as the nasolabial folds. For the fold itself these labels run from the mid dermis to the superficial subcutis, and the supraperiosteal plane appears in Restylane Lyft&#8217;s cheek indication.<\/p>\n<div class=\"sr-table-wrap sr-comp sr-nlf-t-labels sr-nlf-stack sr-nlf-incidence sr-nlf-incidence--labelled\">\n<table id=\"table-labels\">\n<caption>Hyaluronic acid fillers approved by the FDA through premarket approval (PMA) for the nasolabial fold: PMA number and date, the labeled plane and the needle or cannula on each label.<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Filler<\/th>\n<th scope=\"col\">FDA premarket approval<\/th>\n<th scope=\"col\">Labeled plane for the fold<\/th>\n<th scope=\"col\">Needle or cannula on the label<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-label=\"Filler\"><b>Restylane; Restylane-L with lidocaine<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P020023, December 12, 2003; Restylane-L under P040024\/S039, January 29, 2010, with lips added under S056, August 30, 2012<\/td>\n<td data-label=\"Labeled plane for the fold\">Mid-to-deep dermis<\/td>\n<td data-label=\"Needle or cannula on the label\">30G \u00d7 \u00bd\u2033 needle; Restylane-L 30G or 29G<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>Perlane<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P040024\/S006, May 2, 2007<\/td>\n<td data-label=\"Labeled plane for the fold\">Deep dermis to superficial subcutis<\/td>\n<td data-label=\"Needle or cannula on the label\">27G \u00d7 \u00bd\u2033 needle<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>Restylane Lyft with Lidocaine<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P040024\/S073, July 1, 2015<\/td>\n<td data-label=\"Labeled plane for the fold\">Deep dermis to superficial subcutis<\/td>\n<td data-label=\"Needle or cannula on the label\">29G and 27G thin-wall needles<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>Juv\u00e9derm 24HV, 30 and 30HV; Juv\u00e9derm Ultra XC<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P050047, June 2, 2006; Ultra XC under S005, January 7, 2010, with lips added under S044, September 30, 2015<\/td>\n<td data-label=\"Labeled plane for the fold\">Mid to deep dermis<\/td>\n<td data-label=\"Needle or cannula on the label\">24HV 30G; 30 and 30HV 27G; Ultra XC 30G<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>Juv\u00e9derm Vollure XC<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P110033\/S020, March 17, 2017<\/td>\n<td data-label=\"Labeled plane for the fold\">Mid to deep dermis<\/td>\n<td data-label=\"Needle or cannula on the label\">Ultrafine needle (patient label)<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>Belotero Balance; Belotero Balance (+) with lidocaine<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P090016, November 14, 2011; Balance (+) under S028, August 29, 2019<\/td>\n<td data-label=\"Labeled plane for the fold\">Mid-to-deep dermis<\/td>\n<td data-label=\"Needle or cannula on the label\">30G needle<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>Restylane Refyne and Restylane Defyne<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P140029, December 9, 2016<\/td>\n<td data-label=\"Labeled plane for the fold\">Mid-to-deep dermis; Defyne for deep folds<\/td>\n<td data-label=\"Needle or cannula on the label\">Refyne 30G; Defyne 27G<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>Revanesse Versa, approved as Revanesse Ultra<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P160042, August 4, 2017; renamed under S001, October 2, 2017<\/td>\n<td data-label=\"Labeled plane for the fold\">Mid to deep dermis<\/td>\n<td data-label=\"Needle or cannula on the label\">27G \u00d7 0.5\u2033 needle<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>RHA 2 and RHA 3<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P170002, October 19, 2017<\/td>\n<td data-label=\"Labeled plane for the fold\">Mid-to-deep dermis, dynamic folds<\/td>\n<td data-label=\"Needle or cannula on the label\">RHA 2 30G; RHA 3 27G; 25G \u00d7 2\u2033 cannula under S022, May 12, 2023<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>RHA 4<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P170002, October 19, 2017<\/td>\n<td data-label=\"Labeled plane for the fold\">Deep dermis to superficial subcutaneous tissue, dynamic folds<\/td>\n<td data-label=\"Needle or cannula on the label\">27G needle; 25G \u00d7 2\u2033 cannula under S022, May 12, 2023<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>RHA Kiss Volume, formerly RHA 3 Mepi<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P170002\/S026, October 13, 2023; renamed under S055, July 27, 2026<\/td>\n<td data-label=\"Labeled plane for the fold\">Mid-to-deep dermis, dynamic folds<\/td>\n<td data-label=\"Needle or cannula on the label\">27G or 30G needle for the lips and the fold under S055<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>Evolysse Smooth and Evolysse Form<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P240022, February 13, 2025<\/td>\n<td data-label=\"Labeled plane for the fold\">Dermal and subdermal, dynamic folds<\/td>\n<td data-label=\"Needle or cannula on the label\">Smooth 30G; Form 30G or 27G<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Filler\"><b>saypha MagIQ<\/b><\/td>\n<td data-label=\"FDA premarket approval\">P240008, September 8, 2025<\/td>\n<td data-label=\"Labeled plane for the fold\">Mid to deep dermis<\/td>\n<td data-label=\"Needle or cannula on the label\">27G \u00d7 \u00bd\u2033 needle<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>MD Codes set three points per side along the fold: NL1 at the upper fold beside the nasal flare, where the protocol flags the facial artery and its branches to the flare, NL2 at the center and NL3 at the lower fold (de Maio 2021). For bone deficiency at the upper fold it places 0.3 mL per side on the bone at NL1 with a needle, aspirating on the bone. Mild to moderate folds take 0.3 mL at NL1 and 0.2 mL at NL2 in the subcutaneous plane by cannula; severe folds take 0.5, 0.3 and 0.2 mL at NL1, NL2 and NL3, 1.0 mL per side. The cannula serves dynamic folds and a deep-dermal needle serves fine lines, with the volumes drawn from Vycross products.<\/p>\n<p>The cannula route for the fold enters 1 to 1.5 cm lateral to the commissure along the natural wrinkle line, uses a blunt cannula of 25G or larger in the subcutaneous plane and runs retrograde from the nasal end to the labial end, with the probe laid along the cannula in-plane and scanning while the product goes in (Vasconcelos-Berg 2024). The artery averages 13.5 \u00b1 5.4 mm lateral to the commissure in cadavers (Yang 2014), right beside that entry, so the map at the entry and along the track comes before the puncture. In Lee W 2026 a finger-held 15 MHz probe ran Doppler through each cannula injection from an entry lateral to the fold: the artery lay in the subcutaneous fat above the fold, the left side took a mean of 0.98 mL (0.5\u20132 mL) and the right 0.95 mL (0.5\u20131.5 mL), and none of the 33 patients had a vascular complication.<\/p>\n<p>Gauge, entry and tool choice for each point are compared in <a href=\"\/cannula-vs-needle-filler\/\">needle or cannula for the fold and the fossa<\/a>.<\/p>\n<p>Radiesse, a calcium hydroxylapatite filler, holds its own nasolabial fold indication under FDA premarket approval P050052 of December 22, 2006, for subdermal implantation with a 25G to 27G needle.<\/p>\n<\/section>\n<section id=\"workflow\">\n<h2>Map, inject, rescan: the ultrasound workflow for the fold and the fossa<\/h2>\n<p>The ultrasound workflow for the fold and the fossa runs in five steps, map, plan, inject under guidance, confirm and rescan, built on Rocha&#8217;s three-step Doppler method of arterial mapping, real-time guided filling and a perfusion check, used in 480 patients at 18 MHz (Rocha 2022). Teixeira 2025 times the method&#8217;s guided filling at 5 to 20 minutes and its perfusion check at 1 to 3 minutes, and the arterial map alone at 1 to 3 minutes in a series of 503 patients.<\/p>\n<ol>\n<li><strong>Map and mark, face at rest.<\/strong> Scan with the face relaxed: a smile pressed the angular vein against the maxilla and cut its flow from 6.12 to 0.52 cm\/s, to zero in 80.8% of observations after 3 seconds (Cotofana 2020). Scan each side separately, hold the probe perpendicular to the vessel, mark its cross-section on the skin point by point and join the points into a line (Sigrist 2024). Look for earlier filler before any new product goes in (Velthuis 2025).<\/li>\n<li><strong>Plan the plane at each point.<\/strong> Where the artery passes under the fold, pick the layer that bypasses it, as Lee W 2021 did in 80 folds. Where it runs within 3 mm of the bone at the fossa, keep the deposit off the bone at that point (Franceschelli 2024). The labels hold the fold&#8217;s product in the dermis or the superficial subcutis, and MD Codes put NL1 on the bone for bone deficiency (de Maio 2021).<\/li>\n<li><strong>Inject under guidance.<\/strong> At the fold, lay the probe along the cannula and scan while injecting, confirming the tip in its layer and clear of the facial artery and vein branches; at the fossa, clear the point on Doppler, then set the 27G needle on the bone at 90 degrees (Vasconcelos-Berg 2024). Lee W 2026 kept a finger-held 15 MHz probe on Doppler through every cannula pass.<\/li>\n<\/ol>\n<figure class=\"sr-nlf-fig\" id=\"figure-vasconcelos-fig10\" data-sr-media=\"vasconcelos-fig10\" data-sr-wp=\"37636\"><a href=\"https:\/\/suresultmed.com\/wp-content\/uploads\/cannula-vs-needle-filler-vb2024-fig10.webp\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/cannula-vs-needle-filler-vb2024-fig10.webp\" alt=\"Probe held along a cannula at the nasolabial fold beside a color Doppler image of the cannula in the subcutaneous fat above the facial artery\" width=\"771\" height=\"369\"><\/a><figcaption>Scanning while injecting the fold, 18 MHz: (a) the probe held along the cannula, in-plane, at the nasolabial fold; (b) color Doppler with the cannula in the subcutaneous fat, its tip (*) clear of the vessels and the facial artery labeled beneath it. Figure 10, both panels, from Vasconcelos-Berg R, Desyatnikova S, Bonavia P, et al. Diagnostics 2024;14:2544. doi:10.3390\/diagnostics14222544. <a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\" target=\"_blank\">CC BY 4.0<\/a>.<\/figcaption><\/figure>\n<ol start=\"4\">\n<li><strong>Confirm the placement.<\/strong> Under ultrasound, cannula filler held its intended plane in about 90% of 100 injections at day 0, day 14 and day 30, while the product area went from 22.51 to 12.9 mm\u00b2 (Calomeni 2023). Layering the volume-deficient folds of 20 patients deep then superficial with real-time depth confirmation, Hong 2026 reported no vascular compromise or malposition, a median GAIS of 2 at 12 weeks and rescans showing even spread in the target planes.<\/li>\n<li><strong>Rescan.<\/strong> Bring the probe back after each pass to confirm the cannula sits outside the vessels and in the planned plane (Sigrist 2024), then close with the perfusion check of Rocha&#8217;s third step (Rocha 2022).<\/li>\n<\/ol>\n<figure class=\"sr-nlf-clip\" data-sr-clip=\"36709\" data-sr-media=\"wp:36709\"><video controls preload=\"none\" playsinline poster=\"https:\/\/suresultmed.com\/wp-content\/uploads\/suresult-aesthetic-reel-004-facial-artery-poster.webp\" width=\"720\" height=\"1280\"><source src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/suresult-aesthetic-reel-004-facial-artery-fs.mp4\" type=\"video\/mp4\"><\/video><figcaption>Suresult L20 band at 16 MHz, 30 mm depth: the facial artery on PW Doppler inside a Color box, its trace reading PS \u221230.89 cm\/s, ED \u22125.87 cm\/s, RI 0.81 and PI 2.01, the pulsatile pattern that marks an artery.<\/figcaption><\/figure>\n<p>Fresh hyaluronic acid has a recognizable look at each frequency. At 70 MHz, HA in the fold showed as several anechoic oval areas in the dermis, which thickened from 2.04 to 2.28 mm, 11%, and still measured 2.19 mm at 24 weeks (Salvia 2023). At 20 MHz it formed well-demarcated hypoechoic or anechoic areas in the subcutis, one product spreading as many small bubbles and the other as larger clumps (Qiao 2019). At 15 MHz it read anechoic, with a distinct boundary, good through-transmission and no flow (Jiang 2022, as summarized in Salvia 2023). Earlier filler belongs on the pre-map as well: in 94 patients scanned at the nasolabial groove the material was HA in 35, polyacrylamide in 34, fat in 10, silicone oil in 7, calcium hydroxylapatite in 6 and a silicone implant in 2, told apart by echo intensity, texture, boundary, fluidity and flow (Jiang 2022), and a blinded sonographer found the filler at the injection site in all 36 subjects after lip or fold filler (Grippaudo 2010). HA sitting where new product is planned can be dissolved first, as set out in the <a href=\"\/ultrasound-guided-filler-dissolving\/\">guide to dissolving HA filler under ultrasound<\/a>.<\/p>\n<div class=\"sr-nlf-beside\">\n<p>FaceAtlas AI turns the map into a record on all six Suresult linears. Color Power Doppler (CPD) shows blood-flow signals on the live scan before the needle goes in; a freeze gives skin thickness, subcutaneous fat thickness and depth to the SMAS in millimeters, and a 5-second clip keeps the motion. Filler Scan names the material already in the tissue and measures its depth and size, for example HA at 2.6 mm deep over 20.7 mm\u00b2, across seven materials: HA, collagen, PLLA, PCL, CaHA, PMMA and PVA, and the filler assessment adds abnormality screening and complication evaluation. The 21-point map runs from forehead to jawline with two nasolabial fold points and two perioral points, one of each per side, so every follow-up rescans the same spot. Dual View sets the raw scan beside the AI layers while the filler goes in, one click puts this visit beside the last, and each visit exports as a US Letter PDF.<\/p>\n<figure class=\"sr-nlf-fig sr-nlf-fig--app\" data-sr-media=\"36957-edited\"><a href=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-faceatlas-ai-expert-layer-depths.webp\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-faceatlas-ai-expert-layer-depths.webp\" alt=\"FaceAtlas AI Expert screen frozen at the left forehead with skin 0.9 mm, fat 2.0 mm and SMAS depth 2.9 mm beside a side-profile site map\" width=\"1600\" height=\"1132\"><\/a><figcaption>FaceAtlas AI in Expert mode, frozen at the left forehead site: skin 0.9 mm, fat 2.0 mm and SMAS depth 2.9 mm on the AI layers, beside the side-profile site map, the Single and Dual switch and the frame strip.<\/figcaption><\/figure>\n<\/div>\n<h3>Doppler settings for the facial and angular arteries<\/h3>\n<p>Small facial arteries need slow-flow settings: a velocity scale near 3 cm\/s with the PRF and the wall filter brought down to match, plenty of gel and almost no probe pressure (Sigrist 2026). Conventional wall filters hide slow flow in small vessels (Pistoia 2023), which is why the filter comes down with the scale. The table gives each step for the fold and the fossa; what each Doppler mode shows is explained in the <a href=\"\/best-portable-doppler-ultrasound\/\">portable Doppler ultrasound guide<\/a>.<\/p>\n<div class=\"sr-table-wrap sr-comp sr-nlf-t-doppler sr-nlf-stack sr-nlf-incidence\">\n<table id=\"table-doppler\">\n<caption>Steps and settings for mapping the facial and angular arteries at the fold and the fossa on Doppler.<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Step or setting<\/th>\n<th scope=\"col\">Value at the fold and the fossa<\/th>\n<th scope=\"col\">Source<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-label=\"Step or setting\"><b>Face position<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">At rest; a smile stopped angular vein flow within 3 seconds in 80.8% of observations<\/td>\n<td data-label=\"Source\">Cotofana 2020<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Step or setting\"><b>Coupling<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">Abundant gel and no compression<\/td>\n<td data-label=\"Source\">Pistoia 2023; Bustamante 2025; Sigrist 2026<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Step or setting\"><b>Modes<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">Color Doppler in every study; pulsed (spectral) Doppler for mapping<\/td>\n<td data-label=\"Source\">Chammas 2025<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Step or setting\"><b>Fold sweep<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">Oblique plane along the fold, from the ala to the mouth corner<\/td>\n<td data-label=\"Source\">Chammas 2025<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Step or setting\"><b>Fossa sweep<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">Longitudinal between the ala and the anterior maxilla, marker perpendicular to the ala; or vertical at the angle between the ala and the cheek<\/td>\n<td data-label=\"Source\">Bustamante 2025; Franceschelli 2024<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Step or setting\"><b>Probe to vessel<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">Perpendicular; each cross-section marked on the skin and the marks joined into a line<\/td>\n<td data-label=\"Source\">Sigrist 2024<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Step or setting\"><b>Color box<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">Steered along the vessel<\/td>\n<td data-label=\"Source\">Sigrist 2024<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Step or setting\"><b>Velocity scale<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">About 3 cm\/s for small arteries, with PRF and wall filter matched<\/td>\n<td data-label=\"Source\">Sigrist 2026<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Step or setting\"><b>PRF at the fossa<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">0.5\u20130.8 kHz, Doppler at 5.0 MHz<\/td>\n<td data-label=\"Source\">Bustamante 2025<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Step or setting\"><b>Wall filter<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">Matched to the low scale; conventional filters hide slow flow in small vessels<\/td>\n<td data-label=\"Source\">Sigrist 2026; Pistoia 2023<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Step or setting\"><b>Artery or vein<\/b><\/td>\n<td data-label=\"Value at the fold and the fossa\">A pulsatile spectral trace marks the artery; flow that stops completely when the probe presses on the vessel is a vein<\/td>\n<td data-label=\"Source\">Bustamante 2025; Lee W 2023<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Every Suresult linear carries these controls on its own Doppler: PRF, wall filter, steer, color gain and Move &#038; Zoom in Color and PDI, and PW gain, steer, sample volume and angle in PW, with peak systolic velocity, end-diastolic velocity, resistive index and vessel diameter measured on the trace. For coupling, the <a href=\"\/shop\/accessories\/aesthetic-ultrasound-gel-pads\/\">Suresult aesthetic ultrasound gel pads<\/a> are clear, sterile hydrogel pads of \u00d835 \u00d7 4 mm, each in its own sealed pack, latex-free and ISO 10993 biocompatibility-tested, with a 5-year shelf life. One pad stays on from the Doppler map to the last pass, the needle goes straight through it, it repositions on the skin, and it fits all six Suresult linears and other brands&#8217; linear probes, at {{SRX_PRICE:36977}} for 50 with shipping and tax included. The 4 mm stand-off uses 4 mm of display depth, so the L20Pro&#8217;s 10 mm preset shows about 6 mm of tissue under a pad. Sterile coupling for the in-plane probe is set out in the <a href=\"\/ultrasound-guided-filler-injections\/#sterile-coupling\">sterile coupling section of the filler injections guide<\/a>.<\/p>\n<figure class=\"sr-nlf-clip\" data-sr-clip=\"36711\" data-sr-media=\"reel-216-facial-artery-vein\"><video controls preload=\"none\" playsinline poster=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-reel-216-facial-artery-vein-poster.webp\" width=\"1080\" height=\"1920\"><source src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-reel-216-facial-artery-vein.mp4\" type=\"video\/mp4\"><\/video><figcaption>Suresult L24 band: the facial artery on PW Doppler at 24 MHz, 25 mm depth and PRF 4K, then the facial vein in Color and PW at 18 MHz, so the two spectral traces can be read one after the other.<\/figcaption><\/figure>\n<\/section>\n<section id=\"frequency\">\n<h2>What frequency and depth the fold and the fossa need<\/h2>\n<p>The fold and the fossa need a linear probe of at least 15 MHz, the floor in the 2025 Delphi consensus and in the WFUMB position paper, which puts axial resolution at 100 \u00b5m at 15 MHz (Velthuis 2025; Chammas 2025). Above the floor, frequency trades depth for detail: 20 MHz reaches about 10 mm and 10 MHz about 35 mm (Mlosek 2020), 18\u201322 MHz shows vessels of about 0.1 mm (Jagu\u015b 2020), and Veronese 2024 names 24 MHz the method of choice for reading the facial dermis and hypodermis in vivo. The table matches each target to the band and the preset that hold it, using the deepest reading of each target as its limit.<\/p>\n<div class=\"sr-table-wrap sr-comp sr-nlf-t-fit sr-nlf-stack sr-nlf-incidence sr-nlf-incidence--labelled\">\n<table id=\"table-fit\">\n<caption>Which band and preset hold each target of the fold and the fossa, and the depth that decides it.<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Target<\/th>\n<th scope=\"col\">Depth from the skin<\/th>\n<th scope=\"col\">Band<\/th>\n<th scope=\"col\">The spec that decides<\/th>\n<th scope=\"col\">Source<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-label=\"Target\"><b>Skin over the fold<\/b><\/td>\n<td data-label=\"Depth from the skin\">1.6 mm; dermis 1.3 mm<\/td>\n<td data-label=\"Band\">24 or 20 MHz<\/td>\n<td data-label=\"The spec that decides\">10 mm preset puts the skin in the top sixth of the image; 24 MHz on the L24Pro gives the finest near field<\/td>\n<td data-label=\"Source\">Jeong 2023<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Target\"><b>Angular artery over the fossa<\/b><\/td>\n<td data-label=\"Depth from the skin\">3.6 mm mean; 4.8\u20135.8 mm in the second series<\/td>\n<td data-label=\"Band\">20 or 24 MHz<\/td>\n<td data-label=\"The spec that decides\">10 mm preset holds both series on gel alone; with a 4 mm gel pad the deepest reading sits at 9.8 mm, inside the L24Pro&#8217;s 15 mm or the L20Pro&#8217;s 20 mm preset; Power and PW tell it from the vein<\/td>\n<td data-label=\"Source\">Franceschelli 2024; Bustamante 2025<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Target\"><b>Facial artery, alar base to commissure<\/b><\/td>\n<td data-label=\"Depth from the skin\">7.95\u20138.04 mm pooled means; 4.3\u20136.3 mm in the 22\u20138 MHz series<\/td>\n<td data-label=\"Band\">20 MHz<\/td>\n<td data-label=\"The spec that decides\">10 mm preset holds every mean on gel alone, 12.0 mm with the pad on, inside the L24Pro&#8217;s 15 mm or the L20Pro&#8217;s 20 mm preset; Color, Power and PW on the same probe<\/td>\n<td data-label=\"Source\">Pistoia 2023; Pourani 2025<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Target\"><b>Facial artery at the mandibular border<\/b><\/td>\n<td data-label=\"Depth from the skin\">6.27 mm pooled mean; 6.4\u20136.8 mm in the 22\u20138 MHz series<\/td>\n<td data-label=\"Band\">20 or 24 MHz<\/td>\n<td data-label=\"The spec that decides\">10 mm preset; 10.8 mm with the pad on, held by the L24Pro&#8217;s 15 mm or the L20Pro&#8217;s 20 mm preset<\/td>\n<td data-label=\"Source\">Pourani 2025; Pistoia 2023<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Target\"><b>Bone under the deep pyriform space<\/b><\/td>\n<td data-label=\"Depth from the skin\">9.11\u201311.4 mm means<\/td>\n<td data-label=\"Band\">16 to 20 MHz<\/td>\n<td data-label=\"The spec that decides\">L20Pro 20 mm preset, 15.4 mm with the pad on; L24Pro 15 mm preset without the pad, 20 mm with it<\/td>\n<td data-label=\"Source\">Franceschelli 2024; Bustamante 2025<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Target\"><b>Deepest facial artery course<\/b><\/td>\n<td data-label=\"Depth from the skin\">18.7 mm at the cheilion; 23.5 mm at the ala<\/td>\n<td data-label=\"Band\">16 MHz<\/td>\n<td data-label=\"The spec that decides\">L20Pro 20 mm and 30 mm presets<\/td>\n<td data-label=\"Source\">Ten 2021<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>That makes the L20Pro the one probe for the whole fold: 20 MHz at 10 mm for the dermis and both arteries, and 16 MHz from 20 to 40 mm for the bone, the deepest arterial course and the deep cheek, with Color, Power and PW Doppler, Needle Enhance, in-plane and out-of-plane guides and a 25 mm field. The L24Pro adds the finest near field in the line, 24 MHz on 256 elements, for the dermis over the fold and the angular artery at 3.6 mm, and images to 25 mm. The L14Pro and L14 run at 10\/14 MHz with presets to 80 mm for body work; for the fold and the fossa, the 15 MHz floor points to the 16\/20 and 18\/24 MHz bands. The 15, 20 and 24 MHz trade-offs are compared in the <a href=\"\/high-frequency-ultrasound-machine\/\">high-frequency ultrasound machine guide<\/a>, and the three Suresult linear bands head to head in <a href=\"\/l20-vs-l24-aesthetic-ultrasound\/\">L14 vs L20 vs L24 for aesthetic ultrasound<\/a>.<\/p>\n<figure class=\"sr-nlf-fig sr-nlf-fig--720\" data-sr-media=\"wp:32306\"><a href=\"https:\/\/suresultmed.com\/wp-content\/uploads\/suresult-l20pro-longitudinal-superficial-vessel-color-doppler.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/suresult-l20pro-longitudinal-superficial-vessel-color-doppler.png\" alt=\"Whole Suresult app screen at 20 MHz with Color Doppler filling a superficial cutaneous vessel\" width=\"2360\" height=\"1640\"><\/a><figcaption>Suresult L20 band at 20 MHz, Skin preset, 20 mm depth, compound imaging on: a superficial cutaneous vessel filled in Color at PRF 1.0K, wall filter 3 and a 12\u00b0 steer, with the whole app screen and its controls in view.<\/figcaption><\/figure>\n<\/section>\n<section id=\"ranked\">\n<h2>The 6 best scanners for piriform fossa and nasolabial fold filler, ranked<\/h2>\n<p>For piriform fossa and nasolabial fold filler the Suresult L20Pro ranks first at 95.0\/100, ahead of the Clarius L20 HD3 at 75.0, the Mindray TE Air e5M at 58.5, the GE Vscan Air SL at 48.4, the Butterfly iQ3 at 45.7 and the Philips Lumify L12-4 at 43.6. I scored each card on the seven criteria set out under How I scored, with the rival prices read on October 31, 2026.<\/p>\n<article class=\"sr-atlas-card sr-choice\" id=\"rank-1\" data-sr-maker=\"suresult\" data-sr-device-slot=\"suresult-l20pro\">\n<figure class=\"sr-lead-figure sr-nlf-cardlead\" data-sr-media=\"wp:32253\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/l20pro-2000-main-q95.webp\" alt=\"Suresult L20Pro 16\/20 MHz wireless linear ultrasound probe\" width=\"2000\" height=\"2000\"><figcaption>Product photo, official Suresult L20Pro page (checked October 31, 2026).<\/figcaption><\/figure>\n<h3><em>01<\/em> Suresult L20Pro \u2014 Best Overall for Piriform Fossa and Nasolabial Fold Filler<\/h3>\n<p class=\"sr-atlas-spec\">16\/20 MHz linear on 256 elements \u00b7 10\/20\/30\/40 mm presets \u00b7 Color, Power and PW Doppler in the price \u00b7 Needle Enhance plus in-plane and out-of-plane guides \u00b7 {{SRX_PRICE:31250}}<\/p>\n<p class=\"sr-nlf-score\">Score: 95.0\/100<\/p>\n<p class=\"sr-nlf-keyfacts\">4,400 mAh, up to 4 hours a charge \u00b7 145 g \u00b7 IP67, drop-tested \u00b7 no subscription for imaging or Doppler \u00b7 {{SRX_PRICE:31250}}<\/p>\n<p class=\"sr-rank-buy\"><a class=\"sr-buy-cta\" href=\"\/shop\/handheld-ultrasounds\/l20pro-16-20mhz-high-frequency-linear-probe-ultrasound\/\">See the Suresult L20Pro high-frequency probe: {{SRX_PRICE:31250}}<\/a><\/p>\n<p class=\"sr-nlf-verdict\"><strong>Verdict:<\/strong> Buy the L20Pro if you fill both the fold and the fossa. I rank it first because one probe maps the angular artery and the facial artery along the whole fold at 20 MHz, switches to 16 MHz for the bone under the deep pyriform space, carries all three Doppler modes and Needle Enhance in its price, and keeps each map for the rescan.<\/p>\n<ul class=\"sr-nlf-specs\">\n<li><strong>Both arteries:<\/strong> 20 MHz on the 10 mm preset holds the angular artery at 3.6 mm and the facial artery&#8217;s pooled mean depths of 6.27 to 8.04 mm; a PW trace tells the 1.4 mm angular artery from its vein<\/li>\n<li><strong>Depth range:<\/strong> 16 MHz on the 20, 30 and 40 mm presets reaches the bone at 9.11 to 11.4 mm, the facial artery&#8217;s deepest course at 23.5 mm and the deep cheek<\/li>\n<li><strong>Needle and cannula:<\/strong> Needle Enhance, Flip, Grid and the in-plane and out-of-plane puncture guides across a 25 mm linear face<\/li>\n<li><strong>Records:<\/strong> cine of up to 1,000 frames, about 165 seconds; local storage; JPEG, PNG, MP4 and DICOM export; apps for iOS, Android and Windows<\/li>\n<li class=\"sr-nlf-li-media\"><span><strong>Mapping software:<\/strong> <a href=\"\/faceatlas\/\">FaceAtlas AI<\/a> carries two nasolabial fold points and two perioral points in its 21-point map, reads skin, fat and SMAS depth in millimeters, shows blood flow on Color Power Doppler before the needle goes in, and names HA among seven filler materials with its depth and area<\/span><br \/>\n<figure class=\"sr-nlf-fig sr-nlf-fig--li\" data-sr-media=\"wp:36441\"><a href=\"https:\/\/suresultmed.com\/wp-content\/uploads\/faceatlas-ai-21-point-facial-map.webp\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/faceatlas-ai-21-point-facial-map.webp\" alt=\"FaceAtlas AI facial map with outlined zones from the forehead to the jawline\" width=\"900\" height=\"1120\"><\/a><figcaption>The FaceAtlas AI facial map with its zones outlined from forehead to jawline.<\/figcaption><\/figure>\n<\/li>\n<li><strong>FaceAtlas AI license:<\/strong> the L14Pro, L20Pro and L24Pro each include 3 months, counted from the day you press Start; the L14, L20 and L24 run it on a key at {{SRX_STORE:36381}} per month, {{SRX_STORE:36382}} per year or {{SRX_STORE:36383}} for the life of the device, and the lifetime key is sold until 11:59 PM PT, December 31, 2026<\/li>\n<\/ul>\n<p><strong>Why it ranks here.<\/strong> The L20Pro takes the maximum on six of the seven criteria: 20 MHz for resolution, the 40 mm preset for depth, all three Doppler modes in the purchase, FaceAtlas AI mapping in the 3 included months, Needle Enhance with the guides, and 1,000 frames of cine with DICOM. Its five-year total, {{SRX_TOTAL:P31250+S36383}} with the lifetime key, sold until 11:59 PM PT, December 31, 2026, scores 9.975 of 15 against the lowest total I scored, the Suresult L14 at {{SRX_TOTAL:P28577+S36383}}.<\/p>\n<p class=\"sr-nlf-subscores\">Sub-scores: resolution 20\/20, depth 10\/10, Doppler 25\/25, mapping software 15\/15, needle and cannula 10\/10, records 5\/5, five-year cost 9.975\/15.<\/p>\n<p class=\"sr-nlf-reg\">The L20Pro and its five Suresult siblings are <a href=\"\/certifications-compliance\/\">510(k)-cleared under K211321<\/a>.<\/p>\n<p><strong>L20Pro, L24Pro or L14Pro?<\/strong> All three Pros run on 256 elements with Color, Power and PW Doppler, Needle Enhance, a 4-hour battery and 3 months of FaceAtlas AI, so the band decides. The L20Pro covers the fold and the fossa from the dermis to the bone. The <a href=\"\/shop\/handheld-ultrasounds\/l24-pro-18-24mhz-high-frequency-linear-probe-ultrasound\/\">Suresult L24Pro handheld ultrasound<\/a> ({{SRX_PRICE:30649}}) adds 24 MHz, the finest near field in the line, for the 1.3 mm dermis over the fold and the angular artery at 3.6 mm, with presets to 25 mm. The <a href=\"\/shop\/handheld-ultrasounds\/l14pro-10-14mhz-high-frequency-linear-probe-ultrasound\/\">Suresult L14Pro linear probe<\/a> ({{SRX_PRICE:31438}}) runs 10\/14 MHz to 80 mm for the body, and the 15 MHz Delphi minimum hands the face to the other two.<\/p>\n<p class=\"sr-nlf-fit\"><span><strong>Best for:<\/strong> injectors who map the facial and angular arteries, fill the fold and the fossa and rescan on one probe from the dermis to the bone.<\/span> <span><strong>Choose a family model if:<\/strong> you want the 24 MHz near field on 192 elements at {{SRX_PRICE:28675}} (the L24), or the 16\/20 MHz band at {{SRX_STORE:28582}} with FaceAtlas AI on a key (the L20).<\/span> <span class=\"sr-nlf-fit-wide\"><strong>Compare carefully if:<\/strong> you want a preset named Pyriform and an on-screen depth of the shallowest vessel on a membership (the Clarius L20 HD3).<\/span><\/p>\n<figure class=\"sr-video\" data-sr-owned-video=\"6upbBGKT48U\" data-sr-youtube=\"6upbBGKT48U\">\n<div class=\"sr-video-frame\"><button type=\"button\" class=\"sr-video-poster\" aria-label=\"Skin layers on the L20 band at 20 MHz, Skin preset; the angular artery in the deep fat of the nasolabial fold on Color Doppler at 20 MHz; the facial artery on PW Doppler at 16 MHz, the L20 band&#x27;s lower frequency; a temple deposit and gluteal layers on the L14 band at 14 MHz; and FaceAtlas AI naming HA among its seven materials. Video: Suresult (official; checked October 31, 2026).\" onclick=\"this.hidden=true;const f=this.nextElementSibling;f.src=f.dataset.src;f.hidden=false;\"><img src=\"https:\/\/i.ytimg.com\/vi\/6upbBGKT48U\/maxresdefault.jpg\" alt=\"Skin layers on the L20 band at 20 MHz, Skin preset; the angular artery in the deep fat of the nasolabial fold on Color Doppler at 20 MHz; the facial artery on PW Doppler at 16 MHz, the L20 band&#x27;s lower frequency; a temple deposit and gluteal layers on the L14 band at 14 MHz; and FaceAtlas AI naming HA among its seven materials. Video: Suresult (official; checked October 31, 2026).\" width=\"1280\" height=\"720\" loading=\"lazy\" decoding=\"async\"><svg viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><circle cx=\"32\" cy=\"32\" r=\"30\" fill=\"#102c25\"\/><path d=\"M26 18L46 32L26 46Z\" fill=\"white\"\/><\/svg><\/button><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/6upbBGKT48U\" loading=\"lazy\" data-src=\"https:\/\/www.youtube-nocookie.com\/embed\/6upbBGKT48U?autoplay=1\" title=\"Facial ultrasound before filler on Suresult linears: skin at 20 MHz, the angular artery at the fold and the facial artery on PW Doppler\" width=\"960\" height=\"540\" allow=\"autoplay; encrypted-media; picture-in-picture\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen hidden><\/iframe><\/div><figcaption>Skin layers on the L20 band at 20 MHz, Skin preset; the angular artery in the deep fat of the nasolabial fold on Color Doppler at 20 MHz; the facial artery on PW Doppler at 16 MHz, the L20 band&#8217;s lower frequency; a temple deposit and gluteal layers on the L14 band at 14 MHz; and FaceAtlas AI naming HA among its seven materials. Video: Suresult (official; checked October 31, 2026).<\/figcaption><\/figure>\n<div class=\"sr-family-siblings\" data-sr-family-of=\"suresult\">\n<h4>Also in this family<\/h4>\n<div class=\"sr-family-sibling\" data-sr-family-sibling=\"Suresult L24Pro\"><img class=\"sr-family-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-l24pro.webp\" alt=\"Suresult L24Pro wireless linear ultrasound probe with tablet\" width=\"1000\" height=\"1000\"><\/p>\n<div>\n<p class=\"sr-nlf-sibline\"><a href=\"\/shop\/handheld-ultrasounds\/l24-pro-18-24mhz-high-frequency-linear-probe-ultrasound\/\">Suresult L24Pro 18\/24 MHz linear ultrasound<\/a> \u00b7 {{SRX_PRICE:30649}} \u00b7 92.4\/100. The superficial pick: 24 MHz on 256 elements for the dermis over the fold and the angular artery 3.6 mm down, presets from 10 to 25 mm, the full Pro kit and 3 months of FaceAtlas AI.<\/p>\n<\/div>\n<\/div>\n<div class=\"sr-family-sibling\" data-sr-family-sibling=\"Suresult L20\"><img class=\"sr-family-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-l20.webp\" alt=\"Suresult L20 wireless linear ultrasound probe with tablet\" width=\"1000\" height=\"1000\"><\/p>\n<div>\n<p class=\"sr-nlf-sibline\"><a href=\"\/shop\/handheld-ultrasounds\/l20-high-frequency-16-20-mhz-linear-wireless-ultrasound-for-msk-skin-and-facial-plastic-surgery-injections\/\">Suresult L20 linear ultrasound probe<\/a> \u00b7 {{SRX_STORE:28582}} \u00b7 89.3\/100. Same 16\/20 MHz band and 10\u201340 mm presets as the L20Pro, on 192 elements, with Color, Power and PW Doppler, Needle Enhance, a 2-hour battery and FaceAtlas AI on a key.<\/p>\n<\/div>\n<\/div>\n<div class=\"sr-family-sibling\" data-sr-family-sibling=\"Suresult L24\"><img class=\"sr-family-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-l24.webp\" alt=\"Suresult L24 wireless linear ultrasound probe with tablet\" width=\"1000\" height=\"1000\"><\/p>\n<div>\n<p class=\"sr-nlf-sibline\"><a href=\"\/shop\/handheld-ultrasounds\/l24-high-frequency-linear-probe-ultrasound\/\">Suresult L24 high-frequency probe<\/a> \u00b7 {{SRX_PRICE:28675}} \u00b7 86.4\/100. 18\/24 MHz to 25 mm on 192 elements with all three Doppler modes and Needle Enhance, a 2-hour battery and FaceAtlas AI on a key.<\/p>\n<\/div>\n<\/div>\n<div class=\"sr-family-sibling\" data-sr-family-sibling=\"Suresult L14Pro\"><img class=\"sr-family-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-l14pro.webp\" alt=\"Suresult L14Pro wireless linear ultrasound probe with tablet\" width=\"1000\" height=\"1000\"><\/p>\n<div>\n<p class=\"sr-nlf-sibline\"><a href=\"\/shop\/handheld-ultrasounds\/l14pro-10-14mhz-high-frequency-linear-probe-ultrasound\/\">Suresult L14Pro linear ultrasound<\/a> \u00b7 {{SRX_PRICE:31438}} \u00b7 83.6\/100. Scored for the record: 10\/14 MHz with presets to 80 mm and the full Pro kit for body work, while the fold and the fossa take the 16\/20 or 18\/24 MHz band.<\/p>\n<\/div>\n<\/div>\n<div class=\"sr-family-sibling\" data-sr-family-sibling=\"Suresult L14\"><img class=\"sr-family-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-l14.webp\" alt=\"Suresult L14 wireless linear ultrasound probe with tablet\" width=\"1000\" height=\"1000\"><\/p>\n<div>\n<p class=\"sr-nlf-sibline\"><a href=\"\/shop\/handheld-ultrasounds\/l14-linear-wireless-ultrasound-high-frequency-imaging\/\">Suresult L14 wireless ultrasound probe<\/a> \u00b7 {{SRX_PRICE:28577}} \u00b7 75.5\/100. Scored for the record and as the cost reference: {{SRX_TOTAL:P28577+S36383}} over five years with a lifetime key, sold until 11:59 PM PT, December 31, 2026. It reaches 80 mm at 10\/14 MHz with all three Doppler modes and the puncture guides.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p class=\"sr-atlas-links\"><a href=\"\/shop\/accessories\/aesthetic-ultrasound-gel-pads\/\">Suresult \u00d835 \u00d7 4 mm gel pads for aesthetic scans<\/a> \u00b7 <a href=\"\/faceatlas\/\">FaceAtlas AI<\/a> \u00b7 <a href=\"\/specialty\/handheld-ultrasound-for-aesthetics\/\">Suresult handhelds for aesthetic practice<\/a><\/p>\n<\/article>\n<article class=\"sr-atlas-card sr-choice\" id=\"rank-2\" data-sr-maker=\"clarius\" data-sr-exact-model-video=\"Clarius L20 HD3\" data-sr-device-slot=\"clarius-l20-hd3\">\n<figure class=\"sr-nlf-cardphoto\"><img class=\"sr-atlas-photo\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-clarius-l20-v2.webp\" alt=\"Clarius L20 HD3 ultrasound probe\" width=\"800\" height=\"800\"><figcaption>Image: Clarius Mobile Health<\/figcaption><\/figure>\n<h3><em>02<\/em> Clarius L20 HD3 \u2014 Best for a Pyriform Preset and Vessel Depth AI at 20 MHz<\/h3>\n<p class=\"sr-atlas-spec\">8\u201320 MHz linear \u00b7 4 cm image depth \u00b7 25 mm field of view \u00b7 Pyriform, Lips and Cheek presets \u00b7 Color and Power Doppler included, PW with Essentials \u00b7 $5,395 plus Essentials<\/p>\n<p class=\"sr-nlf-score\">Score: 75.0\/100<\/p>\n<p class=\"sr-nlf-keyfacts\">290 g \u00b7 about 60 minutes of scanning and 90 minutes to charge \u00b7 3-year standard warranty \u00b7 $5,395<\/p>\n<p class=\"sr-nlf-verdict\"><strong>Verdict:<\/strong> Buy the L20 HD3 if you want a 20 MHz wireless linear whose maker has built its aesthetics tools around the midface: a preset named Pyriform, Vessel Depth AI that prints the depth of the shallowest vessel on Power Doppler and CFI, and classroom videos on pyriform fossa mapping, with an Essentials membership covering PW Doppler, Needle Enhance, local storage and DICOM.<\/p>\n<ul class=\"sr-nlf-specs\">\n<li><strong>Presets:<\/strong> Aesthetics, Cheek, Chin\/Jaw, Dermatology, Lips, Pyriform and Vascular, on the scanner<\/li>\n<li><strong>Vessel tools:<\/strong> Color and Power Doppler with the scanner; PW Doppler and Vessel Depth AI, which shows vessel depth in real time on Power Doppler and CFI, with Essentials<\/li>\n<li><strong>Measurement and AI:<\/strong> Auto Aesthetic Calipers for skin, fat and tissue thickness; T-Mode AI and the Aesthetics Protocol on the membership<\/li>\n<li><strong>Needle tools and records:<\/strong> Needle Enhance with Essentials; Center Guide for injections; 30-second cine; local storage and DICOM on the membership, with MP4 export<\/li>\n<li><strong>Price and plan:<\/strong> $5,395, checked October 31, 2026; Essentials yearly at $695, per 3 years at $1,785 or once at $2,500; Clarius Care at $265, $530 or $795 for 1, 2 or 3 years<\/li>\n<\/ul>\n<p><strong>Why it ranks here.<\/strong> 20 MHz takes the full resolution credit and the 4 cm image the full depth credit. Color and Power come with the scanner and PW with Essentials, for 21 of the 25 Doppler points; Vessel Depth AI earns half the map credit on the membership and the calipers the full layer credit, with no tool that names the material; Needle Enhance on Essentials plus the Center Guide earn 7.5 of 10; and $7,895 over five years with one-time Essentials is the second-highest total in the ranking.<\/p>\n<p class=\"sr-nlf-subscores\">Sub-scores: resolution 20\/20, depth 10\/10, Doppler 21\/25, mapping software 7.5\/15, needle and cannula 7.5\/10, records 3\/5, five-year cost 5.962\/15.<\/p>\n<p><strong>Limitations.<\/strong> PW Doppler, Vessel Depth AI, Needle Enhance, local storage and DICOM all sit in Essentials; cine runs 30 seconds; no tool names the filler already in the tissue.<\/p>\n<p class=\"sr-nlf-fit\"><span><strong>Best for:<\/strong> injectors who want a Pyriform preset, a live depth readout of the shallowest vessel and the maker&#8217;s own pyriform and angular-artery teaching videos, and who will hold Essentials.<\/span> <span><strong>Skip it if:<\/strong> you want PW Doppler, needle enhancement and DICOM in the purchase price, or software that names the filler already in the fold.<\/span><\/p>\n<figure class=\"sr-video\" data-sr-exact-model-video=\"Clarius L20 HD3\" data-sr-youtube=\"zLAphlhYKYM\">\n<div class=\"sr-video-frame\"><button type=\"button\" class=\"sr-video-poster\" aria-label=\"Clarius Mobile Health (official; checked October 31, 2026): the maker&#x27;s introduction to the L20 HD3 for facial aesthetics.\" onclick=\"this.hidden=true;const f=this.nextElementSibling;f.src=f.dataset.src;f.hidden=false;\"><img src=\"https:\/\/i.ytimg.com\/vi\/zLAphlhYKYM\/maxresdefault.jpg\" alt=\"Clarius Mobile Health (official; checked October 31, 2026): the maker&#x27;s introduction to the L20 HD3 for facial aesthetics.\" width=\"1280\" height=\"720\" loading=\"lazy\" decoding=\"async\"><svg viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><circle cx=\"32\" cy=\"32\" r=\"30\" fill=\"#102c25\"\/><path d=\"M26 18L46 32L26 46Z\" fill=\"white\"\/><\/svg><\/button><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/zLAphlhYKYM\" loading=\"lazy\" data-src=\"https:\/\/www.youtube-nocookie.com\/embed\/zLAphlhYKYM?autoplay=1\" title=\"Clarius Mobile Health (official; checked October 31, 2026): the maker&#x27;s introduction to the L20 HD3 for facial aesthetics.\" width=\"960\" height=\"540\" allow=\"autoplay; encrypted-media; picture-in-picture\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen hidden><\/iframe><\/div><figcaption>Clarius Mobile Health (official; checked October 31, 2026): the maker&#8217;s introduction to the L20 HD3 for facial aesthetics.<\/figcaption><\/figure>\n<div class=\"sr-family-siblings\" data-sr-family-of=\"clarius\">\n<h4>Also in this family<\/h4>\n<div class=\"sr-family-sibling\" data-sr-family-sibling=\"Clarius L15 HD3\"><img class=\"sr-family-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-clarius-l15.webp\" alt=\"Clarius L15 HD3 ultrasound probe\" width=\"800\" height=\"800\"><\/p>\n<div>\n<p class=\"sr-nlf-sibline\"><a href=\"https:\/\/store.clarius.com\/products\/l15-hd3-handheld-ultrasound-scanner\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Clarius L15 HD3<\/a> \u00b7 $3,795 plus Essentials, checked October 31, 2026 \u00b7 64.0\/100. A 5\u201315 MHz linear with a 50 mm field and images to 7 cm on the same membership tiers; five years with one-time Essentials come to $6,295.<\/p>\n<\/div>\n<\/div>\n<figure class=\"sr-video\" data-sr-exact-model-video=\"Clarius L15 HD3\" data-sr-youtube=\"UXZv4Wart3U\">\n<div class=\"sr-video-frame\"><button type=\"button\" class=\"sr-video-poster\" aria-label=\"Masters of Ultrasound (independent; checked October 31, 2026): a complete review of the L15 HD3 as a wireless point-of-care scanner.\" onclick=\"this.hidden=true;const f=this.nextElementSibling;f.src=f.dataset.src;f.hidden=false;\"><img src=\"https:\/\/i.ytimg.com\/vi\/UXZv4Wart3U\/maxresdefault.jpg\" alt=\"Masters of Ultrasound (independent; checked October 31, 2026): a complete review of the L15 HD3 as a wireless point-of-care scanner.\" width=\"1280\" height=\"720\" loading=\"lazy\" decoding=\"async\"><svg viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><circle cx=\"32\" cy=\"32\" r=\"30\" fill=\"#102c25\"\/><path d=\"M26 18L46 32L26 46Z\" fill=\"white\"\/><\/svg><\/button><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/UXZv4Wart3U\" loading=\"lazy\" data-src=\"https:\/\/www.youtube-nocookie.com\/embed\/UXZv4Wart3U?autoplay=1\" title=\"Masters of Ultrasound (independent; checked October 31, 2026): a complete review of the L15 HD3 as a wireless point-of-care scanner.\" width=\"960\" height=\"540\" allow=\"autoplay; encrypted-media; picture-in-picture\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen hidden><\/iframe><\/div><figcaption>Masters of Ultrasound (independent; checked October 31, 2026): a complete review of the L15 HD3 as a wireless point-of-care scanner.<\/figcaption><\/figure>\n<\/div>\n<p class=\"sr-atlas-links\"><a href=\"https:\/\/clarius.com\/specialties\/aesthetics\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Clarius aesthetics<\/a> \u00b7 <a href=\"https:\/\/store.clarius.com\/products\/l20-hd3-handheld-ultrasound-scanner\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">L20 HD3 at the Clarius store<\/a> \u00b7 <a href=\"\/clarius-ultrasound-price-subscription-cost-2026\/\">Clarius prices and Essentials costs in 2026<\/a><\/p>\n<\/article>\n<article class=\"sr-atlas-card sr-choice\" id=\"rank-3\" data-sr-maker=\"mindray\" data-sr-exact-model-video=\"Mindray TE Air e5M\" data-sr-device-slot=\"mindray-te-air-e5m\">\n<figure class=\"sr-nlf-cardphoto sr-nlf-cardphoto--wide\"><img class=\"sr-atlas-photo\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-mindray-te-air-e5m.webp\" alt=\"Mindray TE Air e5M wireless probe with its tablet\" width=\"1317\" height=\"670\"><figcaption>Image: Mindray<\/figcaption><\/figure>\n<h3><em>03<\/em> Mindray TE Air e5M \u2014 Best for Color, Power and PW Doppler at the Lowest Five-Year Rival Cost<\/h3>\n<p class=\"sr-atlas-spec\">2-in-1 convex and linear transducer \u00b7 linear B-mode bands to 8.2 MHz in a 2.0\u20139.0 MHz bandwidth \u00b7 images to 40 cm \u00b7 Color, Power and PW Doppler standard \u00b7 iNeedle and VA Grid \u00b7 $4,499<\/p>\n<p class=\"sr-nlf-score\">Score: 58.5\/100<\/p>\n<p class=\"sr-nlf-keyfacts\">229 g \u00b7 90 to 120 minutes of B-mode scanning \u00b7 IP68 \u00b7 3-year warranty \u00b7 $4,499<\/p>\n<p class=\"sr-nlf-verdict\"><strong>Verdict:<\/strong> Buy the TE Air e5M if you want Color, Power and PW Doppler, a needle-enhancement mode and a vascular access grid in one purchase with nothing to renew, on a 2-in-1 transducer that adds a convex mode for whole-body imaging. Its linear B-mode bands top out at 8.2 MHz, under the 15 MHz minimum the 2025 Delphi panel sets for facial injectables.<\/p>\n<ul class=\"sr-nlf-specs\">\n<li><strong>Doppler:<\/strong> Color, Power and PW standard, Color and PW at 4.0, 4.4 and 5.0 MHz on the linear; Color to 146 cm\/s, Power on 30 scale levels, a PW scale from 1.0 cm\/s and a 0.5\u201320 mm sample volume<\/li>\n<li><strong>Needle tools:<\/strong> iNeedle needle-visualization enhancement, left or right, and the VA Grid for vascular access, both specific to the e5M<\/li>\n<li><strong>Software:<\/strong> Smart Calc for automatic vessel diameter and area, iTouch+ image optimization, iWorks protocols and iScanHelper tutorials; Small Organ, Vascular, Musculo-skeletal and Nerve applications on the linear, among 23 exam modes<\/li>\n<li><strong>Records:<\/strong> cine up to 125 frames, preset from 2 to 5 seconds; JPG and MP4 export; DICOM 3.0; patient data kept on board, with no cloud and no subscription<\/li>\n<li><strong>Price and clearance:<\/strong> $4,499 at the Mindray North America store, checked October 31, 2026, with no subscription plan; the Air Capsule for wireless charging costs $750; the FDA cleared the e5M transducer with iNeedle, Smart Calc, iWorks and iScanHelper under 510(k) K240906 on July 23, 2024<\/li>\n<\/ul>\n<p><strong>Why it ranks here.<\/strong> All three Doppler modes in the purchase take the full 25 points, iNeedle with the VA Grid the full needle credit, DICOM with onboard storage 3 records points, and $4,499, the lowest five-year total among the rivals, 10.462 of 15. The resolution rule starts counting at 10 MHz, so linear bands that end at 8.2 MHz score 0, and Smart Calc measures vessel diameter and area, which the software criterion does not credit.<\/p>\n<p class=\"sr-nlf-subscores\">Sub-scores: resolution 0\/20, depth 10\/10, Doppler 25\/25, mapping software 0\/15, needle and cannula 10\/10, records 3\/5, five-year cost 10.462\/15.<\/p>\n<p><strong>Limitations.<\/strong> The linear B-mode bands run from 2.0 to 8.2 MHz, under the 15 MHz floor for facial work; cine holds 2 to 5 seconds; Mindray names no layer-depth, injection-point or filler-material tool.<\/p>\n<p class=\"sr-nlf-fit\"><span><strong>Best for:<\/strong> whole-body practices that want all three Doppler modes and the needle tools paid once, with no plan to renew.<\/span> <span><strong>Skip it if:<\/strong> you image the dermis over the fold or the 3.6 mm angular artery at 15 MHz or more, or want layer depths and filler mapping in the software.<\/span><\/p>\n<figure class=\"sr-video\" data-sr-exact-model-video=\"Mindray TE Air e5M\" data-sr-youtube=\"3R-y40mQkEo\">\n<div class=\"sr-video-frame\"><button type=\"button\" class=\"sr-video-poster\" aria-label=\"Mindray (official; checked October 31, 2026): the maker&#x27;s video of the TE Air e5M wireless handheld.\" onclick=\"this.hidden=true;const f=this.nextElementSibling;f.src=f.dataset.src;f.hidden=false;\"><img src=\"https:\/\/i.ytimg.com\/vi\/3R-y40mQkEo\/maxresdefault.jpg\" alt=\"Mindray (official; checked October 31, 2026): the maker&#x27;s video of the TE Air e5M wireless handheld.\" width=\"1280\" height=\"720\" loading=\"lazy\" decoding=\"async\"><svg viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><circle cx=\"32\" cy=\"32\" r=\"30\" fill=\"#102c25\"\/><path d=\"M26 18L46 32L26 46Z\" fill=\"white\"\/><\/svg><\/button><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/3R-y40mQkEo\" loading=\"lazy\" data-src=\"https:\/\/www.youtube-nocookie.com\/embed\/3R-y40mQkEo?autoplay=1\" title=\"Mindray (official; checked October 31, 2026): the maker&#x27;s video of the TE Air e5M wireless handheld.\" width=\"960\" height=\"540\" allow=\"autoplay; encrypted-media; picture-in-picture\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen hidden><\/iframe><\/div><figcaption>Mindray (official; checked October 31, 2026): the maker&#8217;s video of the TE Air e5M wireless handheld.<\/figcaption><\/figure>\n<p class=\"sr-atlas-links\"><a href=\"https:\/\/www.mindray.com\/na\/products\/ultrasound\/portable-ultrasound-machines\/handheld-ultrasound\/te-air-e5m-handheld-ultrasound\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TE Air e5M at Mindray North America<\/a> \u00b7 <a href=\"https:\/\/mindrayna.my.site.com\/teair\/product-details?c__productId=01tPq00000GISELIA5\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Mindray TE Air store<\/a><\/p>\n<\/article>\n<article class=\"sr-atlas-card sr-choice\" id=\"rank-4\" data-sr-maker=\"ge-healthcare\" data-sr-exact-model-video=\"GE Vscan Air SL\" data-sr-device-slot=\"ge-vscan-air-sl\">\n<figure class=\"sr-nlf-cardphoto\"><img class=\"sr-atlas-photo\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-ge-vscan-air-sl-v2.webp\" alt=\"GE Vscan Air SL ultrasound probe\" width=\"800\" height=\"800\"><figcaption>Image: GE HealthCare<\/figcaption><\/figure>\n<h3><em>04<\/em> GE Vscan Air SL \u2014 Best for Color and PW Doppler With Every Scored Tool in the Price<\/h3>\n<p class=\"sr-atlas-spec\">3\u201312 MHz linear centered at 7.7 MHz \u00b7 images to 8 cm \u00b7 40 \u00d7 7 mm lens on 192 elements \u00b7 Color and PW Doppler in the purchase \u00b7 Centerline Marker \u00b7 $4,999<\/p>\n<p class=\"sr-nlf-score\">Score: 48.4\/100<\/p>\n<p class=\"sr-nlf-keyfacts\">218 g \u00b7 $4,999 \u00b7 up to 50 minutes of continuous scanning \u00b7 3-year standard warranty<\/p>\n<p class=\"sr-nlf-verdict\"><strong>Verdict:<\/strong> Buy the Vscan Air SL if Color and PW Doppler and a centerline marker in one $4,999 purchase matter more to you than a 15 MHz band, with nothing more to buy for any scored tool.<\/p>\n<ul class=\"sr-nlf-specs\">\n<li><strong>Imaging and Doppler:<\/strong> a linear head from 3 to 12 MHz, centered at 7.7 MHz, to 8 cm, with B, Color, B+Color, Harmonics, M and PW modes<\/li>\n<li><strong>Needle tools:<\/strong> the Centerline Marker in the Vscan Air app; free-hand needle and catheter placement among the linear head&#8217;s interventional indications<\/li>\n<li><strong>Records:<\/strong> up to 500 exams on the phone or tablet; DICOM image-server export<\/li>\n<li><strong>Price and plan:<\/strong> $4,999.00, or $4,299.00 as a demo unit, checked October 31, 2026; the optional Innovations plan, $500 a year or $1,299 for 3 years, adds Caption AI, AutoEF, AutoAS, Lung Guidance, HD-SRI and Bladder Volume outside the score<\/li>\n<\/ul>\n<p><strong>Why it ranks here.<\/strong> 12 MHz earns 4 of the 20 resolution points and 8 cm the full depth credit. Color and PW in the purchase give 17 Doppler points, with Power Doppler absent from GE&#8217;s linear mode list; the Centerline Marker takes the guide credit, GE names no needle enhancement, and $4,999 with every scored tool included scores 9.416 for cost.<\/p>\n<p class=\"sr-nlf-subscores\">Sub-scores: resolution 4\/20, depth 10\/10, Doppler 17\/25, mapping software 0\/15, needle and cannula 5\/10, records 3\/5, five-year cost 9.416\/15.<\/p>\n<p><strong>Limitations.<\/strong> The linear tops out at 12 MHz, under the 15 MHz floor; GE lists no Power Doppler for it; the needle aid is a centerline overlay with no enhancement mode.<\/p>\n<p class=\"sr-nlf-fit\"><span><strong>Best for:<\/strong> practices that need the arterial map in Color and PW Doppler from a single purchase.<\/span> <span><strong>Skip it if:<\/strong> you read the dermis over the fold, or want Power Doppler and needle enhancement for the 1.4 mm angular artery.<\/span><\/p>\n<figure class=\"sr-video\" data-sr-exact-model-video=\"GE Vscan Air SL\" data-sr-youtube=\"a2vCsyZx5WM\">\n<div class=\"sr-video-frame\"><button type=\"button\" class=\"sr-video-poster\" aria-label=\"GE HealthCare (official; checked October 31, 2026): the Vscan Air SL running Caption AI.\" onclick=\"this.hidden=true;const f=this.nextElementSibling;f.src=f.dataset.src;f.hidden=false;\"><img src=\"https:\/\/i.ytimg.com\/vi\/a2vCsyZx5WM\/maxresdefault.jpg\" alt=\"GE HealthCare (official; checked October 31, 2026): the Vscan Air SL running Caption AI.\" width=\"1280\" height=\"720\" loading=\"lazy\" decoding=\"async\"><svg viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><circle cx=\"32\" cy=\"32\" r=\"30\" fill=\"#102c25\"\/><path d=\"M26 18L46 32L26 46Z\" fill=\"white\"\/><\/svg><\/button><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/a2vCsyZx5WM\" loading=\"lazy\" data-src=\"https:\/\/www.youtube-nocookie.com\/embed\/a2vCsyZx5WM?autoplay=1\" title=\"GE HealthCare (official; checked October 31, 2026): the Vscan Air SL running Caption AI.\" width=\"960\" height=\"540\" allow=\"autoplay; encrypted-media; picture-in-picture\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen hidden><\/iframe><\/div><figcaption>GE HealthCare (official; checked October 31, 2026): the Vscan Air SL running Caption AI.<\/figcaption><\/figure>\n<p class=\"sr-atlas-links\"><a href=\"https:\/\/www.gehealthcare.com\/products\/ultrasound\/handheld-ultrasound\/vscan-air-sl\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Vscan Air SL at GE HealthCare<\/a> \u00b7 <a href=\"https:\/\/www.gehealthcare.com\/en-us\/shop\/equipment\/vscan-air-sl\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">GE HealthCare US shop<\/a><\/p>\n<\/article>\n<article class=\"sr-atlas-card sr-choice\" id=\"rank-5\" data-sr-maker=\"butterfly\" data-sr-exact-model-video=\"Butterfly iQ3\" data-sr-device-slot=\"butterfly-iq3\">\n<figure class=\"sr-nlf-cardphoto\"><img class=\"sr-atlas-photo\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-butterfly-iq3.webp\" alt=\"Butterfly iQ3 ultrasound probe\" width=\"333\" height=\"800\"><figcaption>Image: Butterfly Network<\/figcaption><\/figure>\n<h3><em>05<\/em> Butterfly iQ3 \u2014 Best for One Whole-Body Probe With Biplane Needle Views<\/h3>\n<p class=\"sr-atlas-spec\">One CMUT probe, 1\u201312 MHz, about 9,000 elements \u00b7 Vascular: Superficial preset from 1 to 4 cm with the Midline Tool \u00b7 Color on the Core plan; Power, PW, Needle Viz and Biplane on Advanced \u00b7 $3,899 plus a plan<\/p>\n<p class=\"sr-nlf-score\">Score: 45.7\/100<\/p>\n<p class=\"sr-nlf-keyfacts\">300 g \u00b7 battery up to 2 hours \u00b7 3-year warranty with an optional 2 more \u00b7 $3,899<\/p>\n<p class=\"sr-nlf-verdict\"><strong>Verdict:<\/strong> Buy the iQ3 if one probe has to cover the whole body as well as the fold, you want Biplane and in-plane Needle Viz views, and you will run the Advanced plan for Power and PW Doppler.<\/p>\n<ul class=\"sr-nlf-specs\">\n<li><strong>Facial vessel preset:<\/strong> Vascular: Superficial, from 1 to 4 cm, with the Midline Tool<\/li>\n<li><strong>Price and plan:<\/strong> $3,899 with a 3-year warranty, checked October 31, 2026; Color with Core at $299 a year; Power and PW with Advanced at $420 a year or $1,500 once for five years<\/li>\n<li><strong>Needle tools:<\/strong> Needle Viz for in-plane needles at 20 to 40 degrees and Biplane, both in Advanced; a midline marker<\/li>\n<li><strong>Records:<\/strong> unlimited cloud storage; Basic DICOM for PACS and worklists sold as an add-on<\/li>\n<li><strong>Imaging:<\/strong> one 1\u201312 MHz probe for every preset, to 30 cm, with iQ Slice and iQ Fan in Advanced<\/li>\n<\/ul>\n<p><strong>Why it ranks here.<\/strong> 12 MHz earns 4 resolution points and the 30 cm reach the full depth credit. Each Doppler mode sits behind a plan and earns half, 12.5 of 25; Needle Viz on Advanced earns half the enhancement credit and the midline marker the guide credit; five years with Advanced bought once total $5,399.<\/p>\n<p class=\"sr-nlf-subscores\">Sub-scores: resolution 4\/20, depth 10\/10, Doppler 12.5\/25, mapping software 0\/15, needle and cannula 7.5\/10, records 3\/5, five-year cost 8.718\/15.<\/p>\n<p><strong>Limitations.<\/strong> Its single probe stops at 12 MHz, short of the 15 MHz facial minimum; every Doppler mode is plan-gated, Color on Core and Power and PW on Advanced; DICOM costs extra.<\/p>\n<p class=\"sr-nlf-fit\"><span><strong>Best for:<\/strong> mixed practices where the same probe moves from the abdomen to the face, with biplane and in-plane needle views on the Advanced plan.<\/span> <span><strong>Skip it if:<\/strong> you need the dermis over the fold at 15 MHz or more, or Doppler without a plan.<\/span><\/p>\n<figure class=\"sr-video\" data-sr-exact-model-video=\"Butterfly iQ3\" data-sr-youtube=\"HljSm0FcGYM\">\n<div class=\"sr-video-frame\"><button type=\"button\" class=\"sr-video-poster\" aria-label=\"Butterfly Network (official; checked October 31, 2026): needle guidance on the iQ3 for ultrasound-guided procedures.\" onclick=\"this.hidden=true;const f=this.nextElementSibling;f.src=f.dataset.src;f.hidden=false;\"><img src=\"https:\/\/i.ytimg.com\/vi\/HljSm0FcGYM\/maxresdefault.jpg\" alt=\"Butterfly Network (official; checked October 31, 2026): needle guidance on the iQ3 for ultrasound-guided procedures.\" width=\"1280\" height=\"720\" loading=\"lazy\" decoding=\"async\"><svg viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><circle cx=\"32\" cy=\"32\" r=\"30\" fill=\"#102c25\"\/><path d=\"M26 18L46 32L26 46Z\" fill=\"white\"\/><\/svg><\/button><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/HljSm0FcGYM\" loading=\"lazy\" data-src=\"https:\/\/www.youtube-nocookie.com\/embed\/HljSm0FcGYM?autoplay=1\" title=\"Butterfly Network (official; checked October 31, 2026): needle guidance on the iQ3 for ultrasound-guided procedures.\" width=\"960\" height=\"540\" allow=\"autoplay; encrypted-media; picture-in-picture\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen hidden><\/iframe><\/div><figcaption>Butterfly Network (official; checked October 31, 2026): needle guidance on the iQ3 for ultrasound-guided procedures.<\/figcaption><\/figure>\n<p class=\"sr-atlas-links\"><a href=\"https:\/\/www.butterflynetwork.com\/iq3-specs\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">iQ3 specifications<\/a> \u00b7 <a href=\"https:\/\/www.butterflynetwork.com\/pricing\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Butterfly plans<\/a><\/p>\n<\/article>\n<article class=\"sr-atlas-card sr-choice\" id=\"rank-6\" data-sr-maker=\"philips\" data-sr-exact-model-video=\"Philips Lumify L12-4\" data-sr-device-slot=\"philips-lumify-l12-4\">\n<figure class=\"sr-nlf-cardphoto\"><img class=\"sr-atlas-photo\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-philips-l12-4-v2.webp\" alt=\"Philips Lumify L12-4 ultrasound probe\" width=\"800\" height=\"800\"><figcaption>Image: Philips<\/figcaption><\/figure>\n<h3><em>06<\/em> Philips Lumify L12-4 \u2014 Best for Clinics Already Running Lumify Transducers<\/h3>\n<p class=\"sr-atlas-spec\">12\u20134 MHz linear \u00b7 images to 12 cm \u00b7 34 mm footprint and 34.5 mm field of view \u00b7 steerable Color with Fast Flow and Slow Flow, plus PW \u00b7 center line marker \u00b7 $10,307.95 outright<\/p>\n<p class=\"sr-nlf-score\">Score: 43.6\/100<\/p>\n<p class=\"sr-nlf-keyfacts\">under 136 g, battery-free \u00b7 up to 7.5 hours of continuous scanning \u00b7 5-year basic warranty through Philips, 90 days at PartsSource \u00b7 $10,307.95<\/p>\n<p class=\"sr-nlf-verdict\"><strong>Verdict:<\/strong> Buy the L12-4 if your clinic already runs Lumify on its phones or tablets and wants a linear with a Slow Flow color mode and PW Doppler, every software feature included in an outright purchase.<\/p>\n<ul class=\"sr-nlf-specs\">\n<li><strong>Doppler:<\/strong> steerable Color in two modes, Fast Flow with a high color scale for arterial flow and Slow Flow with a low scale for venous flow, plus PW<\/li>\n<li><strong>Needle tools:<\/strong> a center line marker; biopsy capable<\/li>\n<li><strong>Records:<\/strong> loops of 1 to 10 seconds captured prospectively; export by email or as DICOM to PACS, a shared network folder or a local directory<\/li>\n<li><strong>Price and plan:<\/strong> Philips sells through its sales team; PartsSource lists a new unit at $10,307.95 outright with a 90-day warranty, or $7,929.19 on exchange, checked October 31, 2026; the outright purchase opens all software and features<\/li>\n<\/ul>\n<p><strong>Why it ranks here.<\/strong> The 12 MHz top earns 4 resolution points and 12 cm the full depth credit; Color and PW in the purchase give 17 Doppler points, with no Power Doppler listed; the center line marker takes the guide credit; and $10,307.95, the highest five-year figure in the ranking, scores 4.566 for cost.<\/p>\n<p class=\"sr-nlf-subscores\">Sub-scores: resolution 4\/20, depth 10\/10, Doppler 17\/25, mapping software 0\/15, needle and cannula 5\/10, records 3\/5, five-year cost 4.566\/15.<\/p>\n<p><strong>Limitations.<\/strong> The band ends at 12 MHz, under the 15 MHz floor; Power Doppler is absent from the L12-4&#8217;s mode list; the PartsSource unit carries 90 days of warranty, against the 5 years Philips gives on transducers bought from Philips.<\/p>\n<p class=\"sr-nlf-fit\"><span><strong>Best for:<\/strong> Lumify owners adding a linear for superficial vessels with Fast Flow and Slow Flow color.<\/span> <span><strong>Skip it if:<\/strong> you want 15 MHz or more for the fold, Power Doppler for the angular artery, or a linear under $10,000.<\/span><\/p>\n<figure class=\"sr-video\" data-sr-exact-model-video=\"Philips Lumify L12-4\" data-sr-youtube=\"LHnoKmANk0k\">\n<div class=\"sr-video-frame\"><button type=\"button\" class=\"sr-video-poster\" aria-label=\"Engenharia Biom\u00e9dica PUC-SP (independent; checked October 31, 2026): a quick demonstration of the Lumify L12-4 probe at work.\" onclick=\"this.hidden=true;const f=this.nextElementSibling;f.src=f.dataset.src;f.hidden=false;\"><img src=\"https:\/\/i.ytimg.com\/vi\/LHnoKmANk0k\/maxresdefault.jpg\" alt=\"Engenharia Biom\u00e9dica PUC-SP (independent; checked October 31, 2026): a quick demonstration of the Lumify L12-4 probe at work.\" width=\"1280\" height=\"720\" loading=\"lazy\" decoding=\"async\"><svg viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><circle cx=\"32\" cy=\"32\" r=\"30\" fill=\"#102c25\"\/><path d=\"M26 18L46 32L26 46Z\" fill=\"white\"\/><\/svg><\/button><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/LHnoKmANk0k\" loading=\"lazy\" data-src=\"https:\/\/www.youtube-nocookie.com\/embed\/LHnoKmANk0k?autoplay=1\" title=\"Engenharia Biom\u00e9dica PUC-SP (independent; checked October 31, 2026): a quick demonstration of the Lumify L12-4 probe at work.\" width=\"960\" height=\"540\" allow=\"autoplay; encrypted-media; picture-in-picture\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen hidden><\/iframe><\/div><figcaption>Engenharia Biom\u00e9dica PUC-SP (independent; checked October 31, 2026): a quick demonstration of the Lumify L12-4 probe at work.<\/figcaption><\/figure>\n<p class=\"sr-atlas-links\"><a href=\"https:\/\/www.usa.philips.com\/healthcare\/product\/HC989605451352\/lumifyl124lineararraytransducer\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Lumify L12-4 at Philips<\/a> \u00b7 <a href=\"https:\/\/www.partssource.com\/parts\/philips\/453561734017\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Lumify L12-4 at PartsSource<\/a><\/p>\n<\/article>\n<\/section>\n<section id=\"cost\">\n<h2>What each scanner costs over five years, software included<\/h2>\n<p>The Suresult L20Pro costs {{SRX_TOTAL:P31250+S36383}} across five years once a lifetime FaceAtlas AI key is added, the only purchase its scored tools need after the probe; that key is sold until 11:59 PM PT, December 31, 2026. On prices read October 31, 2026, the Mindray TE Air e5M totals $4,499, the GE Vscan Air SL $4,999, the Butterfly iQ3 $5,399 with five years of Advanced paid once, the Clarius L20 HD3 $7,895 with one-time Essentials and the Philips Lumify L12-4 $10,307.95 bought outright. Every Suresult total I give carries the lifetime key, because one payment covers the device for every year that follows.<\/p>\n<div class=\"sr-table-wrap sr-comp sr-nlf-t-cost sr-nlf-stack sr-nlf-incidence sr-nlf-incidence--labelled\">\n<table id=\"table-cost\">\n<caption>What each ranked handheld costs over five years with the plan its scored tools require; prices read October 31, 2026; lifetime FaceAtlas AI keys are sold until 11:59 PM PT, December 31, 2026.<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Handheld<\/th>\n<th scope=\"col\">Price<\/th>\n<th scope=\"col\">What the scored tools add<\/th>\n<th scope=\"col\">Five-year total, one-time software<\/th>\n<th scope=\"col\">Five-year total, yearly software<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-label=\"Handheld\"><span class=\"sr-row-id\"><img class=\"sr-row-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-l20pro.webp\" alt=\"Suresult L20Pro wireless linear ultrasound probe with tablet\" width=\"1000\" height=\"1000\"><b>Suresult L20Pro<\/b><\/span><\/td>\n<td data-label=\"Price\">{{SRX_PRICE:31250}}<\/td>\n<td data-label=\"What the scored tools add\">A FaceAtlas AI key after the 3 included months; imaging, Color, Power and PW Doppler and Needle Enhance come with the probe<\/td>\n<td data-label=\"Five-year total, one-time software\">{{SRX_TOTAL:P31250+S36383}}, lifetime key included<\/td>\n<td data-label=\"Five-year total, yearly software\">{{SRX_TOTAL:P31250+S36382*5}}, five yearly keys at {{SRX_STORE:36382}}<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Handheld\"><span class=\"sr-row-id\"><img class=\"sr-row-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-clarius-l20-v2.webp\" alt=\"Clarius L20 HD3 ultrasound probe\" width=\"800\" height=\"800\"><b>Clarius L20 HD3<\/b><\/span><\/td>\n<td data-label=\"Price\">$5,395<\/td>\n<td data-label=\"What the scored tools add\">Essentials at $2,500 one-time unlocks PW Doppler, Vessel Depth AI, Needle Enhance, storage and DICOM<\/td>\n<td data-label=\"Five-year total, one-time software\">$7,895<\/td>\n<td data-label=\"Five-year total, yearly software\">$8,870, paying $695 for each of the five years<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Handheld\"><span class=\"sr-row-id\"><img class=\"sr-row-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-mindray-te-air-e5m.webp\" alt=\"Mindray TE Air e5M wireless probe with its tablet\" width=\"1317\" height=\"670\"><b>Mindray TE Air e5M<\/b><\/span><\/td>\n<td data-label=\"Price\">$4,499<\/td>\n<td data-label=\"What the scored tools add\">All scored tools come standard: Color, Power and PW Doppler, iNeedle, the VA Grid and DICOM<\/td>\n<td data-label=\"Five-year total, one-time software\">$4,499<\/td>\n<td data-label=\"Five-year total, yearly software\">$4,499, with no subscription plan<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Handheld\"><span class=\"sr-row-id\"><img class=\"sr-row-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-ge-vscan-air-sl-v2.webp\" alt=\"GE Vscan Air SL ultrasound probe\" width=\"800\" height=\"800\"><b>GE Vscan Air SL<\/b><\/span><\/td>\n<td data-label=\"Price\">$4,999<\/td>\n<td data-label=\"What the scored tools add\">The purchase already holds the Centerline Marker, Color and PW Doppler, DICOM and on-device storage<\/td>\n<td data-label=\"Five-year total, one-time software\">$4,999<\/td>\n<td data-label=\"Five-year total, yearly software\">$4,999; Innovations at $500 a year is optional and sits outside the score<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Handheld\"><span class=\"sr-row-id\"><img class=\"sr-row-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-butterfly-iq3.webp\" alt=\"Butterfly iQ3 ultrasound probe\" width=\"333\" height=\"800\"><b>Butterfly iQ3<\/b><\/span><\/td>\n<td data-label=\"Price\">$3,899<\/td>\n<td data-label=\"What the scored tools add\">Advanced at $1,500 for five years unlocks Power and PW Doppler, Needle Viz and Biplane; Color comes with Core or Advanced; Basic DICOM, credited under records, is sold separately outside the total<\/td>\n<td data-label=\"Five-year total, one-time software\">$5,399<\/td>\n<td data-label=\"Five-year total, yearly software\">$5,999 on Advanced at $420 a year<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Handheld\"><span class=\"sr-row-id\"><img class=\"sr-row-thumb\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/suresultmed.com\/wp-content\/uploads\/aesthetic-ultrasound-cost-philips-l12-4-v2.webp\" alt=\"Philips Lumify L12-4 ultrasound probe\" width=\"800\" height=\"800\"><b>Philips Lumify L12-4<\/b><\/span><\/td>\n<td data-label=\"Price\">$10,307.95<\/td>\n<td data-label=\"What the scored tools add\">All software and features come with the outright purchase<\/td>\n<td data-label=\"Five-year total, one-time software\">$10,307.95<\/td>\n<td data-label=\"Five-year total, yearly software\">$10,307.95, with no plan to renew<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"sr-table-note\">For handhelds outside this ranking, the <a href=\"\/aesthetic-ultrasound-cost\/\">aesthetic ultrasound cost guide<\/a> runs the same five-year arithmetic, probe by probe and plan by plan.<\/p>\n<p>Suresult prices are final, No Hidden Fees: every order ships within 24 hours worldwide with customs clearance and duties covered, and arrives with a 30-day worry-free trial from delivery and a 2-year warranty that extends to 3 or 5 years. FaceAtlas AI keys are one per device, sent by email, with no auto-renewal. Owners of an L14Pro, L20Pro or L24Pro claim their 3 included months on the <a href=\"\/faceatlas\/claim\/\">FaceAtlas AI claim page<\/a>, and the months start only when Start is pressed. After them, and from the first day on the L14, L20 and L24, the key runs <a href=\"\/shop\/software-ai\/faceatlas-ai-monthly-license-ai-skin-ultrasound-software\/\">monthly<\/a>, <a href=\"\/shop\/software-ai\/faceatlas-ai-yearly-license-ai-skin-ultrasound-software\/\">yearly<\/a> or <a href=\"\/shop\/software-ai\/faceatlas-ai-lifetime-license-ai-skin-ultrasound-software\/\">for life<\/a>, with the lifetime key sold until 11:59 PM PT, December 31, 2026.<\/p>\n<\/section>\n<section id=\"methodology\">\n<h2>How I scored<\/h2>\n<p>I scored each card out of 100 on seven criteria and weights fixed on October 31, 2026, before any rival had a score:<\/p>\n<ul class=\"sr-comp\">\n<li>Resolution (20): 20 \u00d7 (top frequency in MHz \u2212 10) \u00f7 10, kept between 0 and 20, so 20 MHz and up earns 20, 15 MHz 10, 12 MHz 4 and 10 MHz or less 0.<\/li>\n<li>Depth (10): 10 \u00d7 the deepest preset or image depth in mm \u00f7 30, counted up to 30 mm, the plane that reaches the pyriform bone with room to spare.<\/li>\n<li>Doppler (25): Color 9, Power 8 and PW 8, each at full value when the purchase includes it, half when a paid tier unlocks it and zero when it is missing.<\/li>\n<li>Filler-mapping and safety software (15): filler materials named on the scan 5, a vessel or injection-point map 5 and layer depth in mm 5. Each counts in full when the purchase includes it, half when a paid tier or key unlocks it and zero when it is missing. FaceAtlas AI counts as included on the L14Pro, L20Pro and L24Pro, sold with 3 months of it, and as a paid tool on the L14, L20 and L24, where the key is bought separately; any tool its maker sells without a named tier counts as included.<\/li>\n<li>Needle and cannula guidance (10): 5 for needle enhancement and 5 for in-plane or out-of-plane guides, biplane views, or a centerline, midline or access-grid aid named for needle work, halved when the tool sits in a paid tier.<\/li>\n<li>Records (5): 2 for cine of 60 seconds or more and 3 for storage with DICOM export.<\/li>\n<li>Five-year cost (15): 15 \u00d7 the cheapest five-year total of the 12 models I scored, divided by this card&#8217;s total. A Suresult total is the October 31, 2026 hardware price plus one lifetime FaceAtlas AI key (sold until 11:59 PM PT, December 31, 2026), and the L20&#8217;s uses the {{SRX_STORE:28582}} printed on its page; the Clarius total carries one-time Essentials, the Butterfly total five years of Advanced, and the L14&#8217;s {{SRX_TOTAL:P28577+S36383}} is the cheapest and sets the scale.<\/li>\n<\/ul>\n<div class=\"sr-table-wrap sr-comp sr-nlf-t-scores sr-nlf-stack sr-nlf-scores sr-nlf-incidence sr-nlf-incidence--labelled\">\n<table id=\"table-scores\">\n<caption>Score out of 100 for each ranked card, criterion by criterion, on the protocol fixed October 31, 2026.<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Card and rank<\/th>\n<th scope=\"col\">Resolution (20)<\/th>\n<th scope=\"col\">Depth (10)<\/th>\n<th scope=\"col\">Doppler (25)<\/th>\n<th scope=\"col\">Mapping software (15)<\/th>\n<th scope=\"col\">Needle and cannula (10)<\/th>\n<th scope=\"col\">Records (5)<\/th>\n<th scope=\"col\">Five-year cost (15)<\/th>\n<th scope=\"col\">Total (100)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-label=\"Card and rank\">1 \u00b7 <b>Suresult L20Pro<\/b><\/td>\n<td data-label=\"Resolution (20)\">20<\/td>\n<td data-label=\"Depth (10)\">10<\/td>\n<td data-label=\"Doppler (25)\">25<\/td>\n<td data-label=\"Mapping software (15)\">15<\/td>\n<td data-label=\"Needle and cannula (10)\">10<\/td>\n<td data-label=\"Records (5)\">5<\/td>\n<td data-label=\"Five-year cost (15)\">9.975<\/td>\n<td data-label=\"Total (100)\">95.0<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Card and rank\">2 \u00b7 <b>Clarius L20 HD3<\/b><\/td>\n<td data-label=\"Resolution (20)\">20<\/td>\n<td data-label=\"Depth (10)\">10<\/td>\n<td data-label=\"Doppler (25)\">21<\/td>\n<td data-label=\"Mapping software (15)\">7.5<\/td>\n<td data-label=\"Needle and cannula (10)\">7.5<\/td>\n<td data-label=\"Records (5)\">3<\/td>\n<td data-label=\"Five-year cost (15)\">5.962<\/td>\n<td data-label=\"Total (100)\">75.0<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Card and rank\">3 \u00b7 <b>Mindray TE Air e5M<\/b><\/td>\n<td data-label=\"Resolution (20)\">0<\/td>\n<td data-label=\"Depth (10)\">10<\/td>\n<td data-label=\"Doppler (25)\">25<\/td>\n<td data-label=\"Mapping software (15)\">0<\/td>\n<td data-label=\"Needle and cannula (10)\">10<\/td>\n<td data-label=\"Records (5)\">3<\/td>\n<td data-label=\"Five-year cost (15)\">10.462<\/td>\n<td data-label=\"Total (100)\">58.5<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Card and rank\">4 \u00b7 <b>GE Vscan Air SL<\/b><\/td>\n<td data-label=\"Resolution (20)\">4<\/td>\n<td data-label=\"Depth (10)\">10<\/td>\n<td data-label=\"Doppler (25)\">17<\/td>\n<td data-label=\"Mapping software (15)\">0<\/td>\n<td data-label=\"Needle and cannula (10)\">5<\/td>\n<td data-label=\"Records (5)\">3<\/td>\n<td data-label=\"Five-year cost (15)\">9.416<\/td>\n<td data-label=\"Total (100)\">48.4<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Card and rank\">5 \u00b7 <b>Butterfly iQ3<\/b><\/td>\n<td data-label=\"Resolution (20)\">4<\/td>\n<td data-label=\"Depth (10)\">10<\/td>\n<td data-label=\"Doppler (25)\">12.5<\/td>\n<td data-label=\"Mapping software (15)\">0<\/td>\n<td data-label=\"Needle and cannula (10)\">7.5<\/td>\n<td data-label=\"Records (5)\">3<\/td>\n<td data-label=\"Five-year cost (15)\">8.718<\/td>\n<td data-label=\"Total (100)\">45.7<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Card and rank\">6 \u00b7 <b>Philips Lumify L12-4<\/b><\/td>\n<td data-label=\"Resolution (20)\">4<\/td>\n<td data-label=\"Depth (10)\">10<\/td>\n<td data-label=\"Doppler (25)\">17<\/td>\n<td data-label=\"Mapping software (15)\">0<\/td>\n<td data-label=\"Needle and cannula (10)\">5<\/td>\n<td data-label=\"Records (5)\">3<\/td>\n<td data-label=\"Five-year cost (15)\">4.566<\/td>\n<td data-label=\"Total (100)\">43.6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Siblings are scored inside their maker&#8217;s card: the Suresult L24Pro 92.4, L20 89.3, L24 86.4, L14Pro 83.6 and L14 75.5, and the Clarius L15 HD3 64.0. The Suresult card leads with the L20Pro, which outscores the L24Pro on depth, 40 mm against 25 mm, and on five-year cost; the Clarius card leads with the L20 HD3, whose 20 MHz band outscores the L15 HD3&#8217;s 15 MHz.<\/p>\n<p>I reran the order seven ways, as declared, and under fourteen alternative readings of the sources; the Suresult card stays first and the Clarius L20 HD3 second in every one. The table gives the declared run, the seven reruns and the three readings least favorable to the Suresult card, RC12 to RC14, where its lead is smallest: 6.01 points on the L20Pro and 3.45 on the L24Pro. Rival prices were read on October 31, 2026, and the rival plans and tool lists between October 28 and 31.<\/p>\n<div class=\"sr-table-wrap sr-comp sr-nlf-t-sensitivity sr-nlf-stack sr-nlf-incidence sr-nlf-incidence--labelled\">\n<table id=\"table-sensitivity\">\n<caption>Totals under the declared run S0, the seven declared reruns, S1 to S7, and RC12 to RC14, the three reading checks least favorable to the Suresult card; S2 and S3 each drop a criterion, so their maximums are 85 and 90 points; the Suresult card is scored on the L20Pro unless the row names the L24Pro; totals carry two decimals, and the ranked scores round them to one.<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Run<\/th>\n<th scope=\"col\">Suresult card<\/th>\n<th scope=\"col\">Clarius L20 HD3<\/th>\n<th scope=\"col\">Mindray TE Air e5M<\/th>\n<th scope=\"col\">GE Vscan Air SL<\/th>\n<th scope=\"col\">Butterfly iQ3<\/th>\n<th scope=\"col\">Philips Lumify L12-4<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-label=\"Run\"><b>S0, the declared run<\/b><\/td>\n<td data-label=\"Suresult card\">94.97<\/td>\n<td data-label=\"Clarius L20 HD3\">74.96<\/td>\n<td data-label=\"Mindray TE Air e5M\">58.46<\/td>\n<td data-label=\"GE Vscan Air SL\">48.42<\/td>\n<td data-label=\"Butterfly iQ3\">45.72<\/td>\n<td data-label=\"Philips Lumify L12-4\">43.57<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Run\"><b>S1, no credit for mapping software<\/b><\/td>\n<td data-label=\"Suresult card\">79.97<\/td>\n<td data-label=\"Clarius L20 HD3\">67.46<\/td>\n<td data-label=\"Mindray TE Air e5M\">58.46<\/td>\n<td data-label=\"GE Vscan Air SL\">48.42<\/td>\n<td data-label=\"Butterfly iQ3\">45.72<\/td>\n<td data-label=\"Philips Lumify L12-4\">43.57<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Run\"><b>S2, cost criterion removed<\/b><\/td>\n<td data-label=\"Suresult card\">85.00<\/td>\n<td data-label=\"Clarius L20 HD3\">69.00<\/td>\n<td data-label=\"Mindray TE Air e5M\">48.00<\/td>\n<td data-label=\"GE Vscan Air SL\">39.00<\/td>\n<td data-label=\"Butterfly iQ3\">37.00<\/td>\n<td data-label=\"Philips Lumify L12-4\">39.00<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Run\"><b>S3, depth criterion removed<\/b><\/td>\n<td data-label=\"Suresult card\">84.97<\/td>\n<td data-label=\"Clarius L20 HD3\">64.96<\/td>\n<td data-label=\"Mindray TE Air e5M\">48.46<\/td>\n<td data-label=\"GE Vscan Air SL\">38.42<\/td>\n<td data-label=\"Butterfly iQ3\">35.72<\/td>\n<td data-label=\"Philips Lumify L12-4\">33.57<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Run\"><b>S4, resolution uncapped at 25 \u00d7 (MHz \u2212 10) \u00f7 14<\/b><\/td>\n<td data-label=\"Suresult card\">92.83<\/td>\n<td data-label=\"Clarius L20 HD3\">72.82<\/td>\n<td data-label=\"Mindray TE Air e5M\">58.46<\/td>\n<td data-label=\"GE Vscan Air SL\">47.99<\/td>\n<td data-label=\"Butterfly iQ3\">45.29<\/td>\n<td data-label=\"Philips Lumify L12-4\">43.14<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Run\"><b>S5, card scored on the L24Pro<\/b><\/td>\n<td data-label=\"Suresult card\">92.41<\/td>\n<td data-label=\"Clarius L20 HD3\">74.96<\/td>\n<td data-label=\"Mindray TE Air e5M\">58.46<\/td>\n<td data-label=\"GE Vscan Air SL\">48.42<\/td>\n<td data-label=\"Butterfly iQ3\">45.72<\/td>\n<td data-label=\"Philips Lumify L12-4\">43.57<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Run\"><b>S6, rival Doppler counted as included<\/b><\/td>\n<td data-label=\"Suresult card\">94.97<\/td>\n<td data-label=\"Clarius L20 HD3\">78.96<\/td>\n<td data-label=\"Mindray TE Air e5M\">58.46<\/td>\n<td data-label=\"GE Vscan Air SL\">48.42<\/td>\n<td data-label=\"Butterfly iQ3\">58.22<\/td>\n<td data-label=\"Philips Lumify L12-4\">43.57<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Run\"><b>S7, Mindray dropped<\/b><\/td>\n<td data-label=\"Suresult card\">94.97<\/td>\n<td data-label=\"Clarius L20 HD3\">74.96<\/td>\n<td data-label=\"Mindray TE Air e5M\">Left out of this run<\/td>\n<td data-label=\"GE Vscan Air SL\">48.42<\/td>\n<td data-label=\"Butterfly iQ3\">45.72<\/td>\n<td data-label=\"Philips Lumify L12-4\">43.57<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Run\"><b>RC12, FaceAtlas AI counted as paid on the Pros, map credit only for a vessel map, and S6<\/b><\/td>\n<td data-label=\"Suresult card\">84.97<\/td>\n<td data-label=\"Clarius L20 HD3\">78.96<\/td>\n<td data-label=\"Mindray TE Air e5M\">58.46<\/td>\n<td data-label=\"GE Vscan Air SL\">48.42<\/td>\n<td data-label=\"Butterfly iQ3\">58.22<\/td>\n<td data-label=\"Philips Lumify L12-4\">43.57<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Run\"><b>RC13, RC12 with the card scored on the L24Pro<\/b><\/td>\n<td data-label=\"Suresult card\">82.41<\/td>\n<td data-label=\"Clarius L20 HD3\">78.96<\/td>\n<td data-label=\"Mindray TE Air e5M\">58.46<\/td>\n<td data-label=\"GE Vscan Air SL\">48.42<\/td>\n<td data-label=\"Butterfly iQ3\">58.22<\/td>\n<td data-label=\"Philips Lumify L12-4\">43.57<\/td>\n<\/tr>\n<tr>\n<td data-label=\"Run\"><b>RC14, RC12 plus the VA Grid and Needle Viz left uncredited, and S4<\/b><\/td>\n<td data-label=\"Suresult card\">82.83<\/td>\n<td data-label=\"Clarius L20 HD3\">76.82<\/td>\n<td data-label=\"Mindray TE Air e5M\">53.46<\/td>\n<td data-label=\"GE Vscan Air SL\">47.99<\/td>\n<td data-label=\"Butterfly iQ3\">55.29<\/td>\n<td data-label=\"Philips Lumify L12-4\">43.14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section id=\"faq\">\n<h2>Piriform fossa, nasolabial fold and angular artery questions<\/h2>\n<div class=\"sr-faq\">\n<details>\n<summary>How much filler goes in the piriform fossa per side?<\/summary>\n<p>0.3 mL per side on the bone for a bone-deficient upper fold, placed by needle at the MD Codes point NL1 (de Maio 2021). The spaces beside it take more: 0.5 to 1 cc per perialar space through a 23G cannula (Yoon 2026) and 0.5 to 0.8 mL in the premaxillary space (Pilsl 2014), and Jung&#8217;s layered technique, which starts in the deep pyriform space, uses 1.0 to 1.5 mL per side across all its layers (Jung 2020).<\/p>\n<\/details>\n<details>\n<summary>What is the deep pyriform space, and what does filler there do?<\/summary>\n<p>A space on the bone beside the base of the nose, 1.1 \u00d7 0.9 cm in cadaver dissection, bounded medially by the depressor septi nasi and laterally and superficially by the deep medial cheek fat and the lip elevators, with the angular artery in the septum of its roof (Surek 2016). Filler there holds its place as volume rises and projects the tissue forward (Cotofana 2019), which suits the paranasal depression of a type 1 fold (Hong 2024).<\/p>\n<\/details>\n<details>\n<summary>Where is the piriform fossa for filler, and is it the same as the one in the throat?<\/summary>\n<p>Beside the base of the nose: the piriform fossa injectors fill is the paranasal hollow over the pyriform aperture beside the ala, where the deep pyriform space sits on the maxilla (Surek 2016). The throat&#8217;s piriform fossae, also called the piriform sinuses, are a different structure: they lie in the laryngopharynx on each side of the laryngeal inlet, in the part of the pharynx that runs from the upper border of the epiglottis to the lower border of the cricoid cartilage at C6 (Pazhaniappan 2025).<\/p>\n<\/details>\n<details>\n<summary>Which facial filler area carries the most vascular risk?<\/summary>\n<p>The nose, by published case count: of 164 published cases of skin necrosis and vision loss after filler, 44.5% followed nasal injection, 21% the glabella and 15% the nasolabial fold, third on the list, ahead of the forehead at 10% (Rauso 2020). For the fossa, the 2025 Delphi panel makes vessel mapping mandatory before injection, with the forehead, glabella, temple and nose (Velthuis 2025).<\/p>\n<\/details>\n<details>\n<summary>How deep is the facial artery at the nasolabial fold?<\/summary>\n<p>6 to 8 mm on Doppler in the pooled means, which deepen from the jaw to the ala: 6.27 mm at the mandibular border, 7.95 mm at the cheilion and 8.04 mm at the lateral ala, with the artery seen at 99.8 to 100% of those levels (Pourani 2025). One 22\u20138 MHz series found the reverse, 6.8 mm at the jaw and 4.3 mm at the alar base on the right (Pistoia 2023). Single faces run from 2.5 mm at its origin by the mandible to 23.5 mm at the nasal ala (Ten 2021).<\/p>\n<\/details>\n<details>\n<summary>Does the facial artery run medial to, across or lateral to the fold?<\/summary>\n<p>All three: across 610 Doppler-mapped arteries it ran medial to the fold in 46.2%, crossed it from medial to lateral in 22.5% and from lateral to medial in 18.5%, and ran lateral in 12.0% (Pourani 2025). In 80 folds scanned before filler the artery lay lateral to the fold in 31% (Lee W 2021).<\/p>\n<\/details>\n<details>\n<summary>Where does the angular artery run over the piriform fossa?<\/summary>\n<p>In the roof of the deep pyriform space, inside the septum between the space and the deep medial cheek fat (Surek 2016), a mean 3.6 mm under the skin and 5.1 mm above the bone on 20 MHz Doppler. Across 332 hemifaces it lay within 3 mm of the bone in 38.6%, 1 mm or less from it in 2.4% and practically on it in another 0.6%, and inside the space in 94.9% (Franceschelli 2024).<\/p>\n<\/details>\n<details>\n<summary>How much filler goes in each nasolabial fold?<\/summary>\n<p>0.3 to 1.0 mL per side by MD Codes, scaled to need: 0.3 mL on the bone at NL1 for bone deficiency, 0.3 mL at NL1 and 0.2 mL at NL2 for a mild to moderate fold, and 0.5, 0.3 and 0.2 mL at NL1 to NL3, 1.0 mL in all, for a severe one (de Maio 2021). Under Doppler, Lee W 2026 injected a mean of 0.98 mL on the left (0.5\u20132 mL) and 0.95 mL on the right (0.5\u20131.5 mL) across 33 patients.<\/p>\n<\/details>\n<details>\n<summary>What Doppler settings find the facial and angular arteries?<\/summary>\n<p>Slow-flow settings: the velocity scale near 3 cm\/s, PRF and wall filter dropped to suit it, plenty of gel and next to no probe pressure (Sigrist 2026). At the fossa one series ran Doppler at 5.0 MHz with a PRF of 0.5 to 0.8 kHz and told the artery from the angular vein by its pulsatile spectral trace (Bustamante 2025); flow that stops entirely under probe pressure is venous (Lee W 2023).<\/p>\n<\/details>\n<details>\n<summary>What frequency does a scanner need for nasolabial fold and piriform mapping?<\/summary>\n<p>At least 15 MHz on a linear probe, with B-mode, Color and spectral Doppler mandatory and Power Doppler recommended, by the 2025 Delphi consensus, which also makes mapping mandatory at the pyriform fossa (Velthuis 2025). For these sites that means 20 MHz on a 10 mm preset for the angular artery at 3.6 mm and the facial artery&#8217;s 6 to 8 mm means, and 16 MHz on a 20 mm preset or deeper for the bone at 9.11 to 11.4 mm.<\/p>\n<\/details>\n<details>\n<summary>How long does vessel mapping add before a nasolabial fold injection?<\/summary>\n<p>Under 3 minutes: across 503 patients the map took 1 to 3 minutes, and at the fold it found an artery wider than 0.8 mm under 43 of 324 planned sites, 13.2% (Teixeira 2025).<\/p>\n<\/details>\n<details>\n<summary>Should you rescan after the bolus, and what does the rescan check?<\/summary>\n<p>Yes: after insertion the probe goes back to confirm the cannula sits outside the vessels and in the planned plane, and every pass is rechecked (Sigrist 2024); a perfusion check closes the session as the third step of Rocha&#8217;s method in 480 patients at 18 MHz (Rocha 2022).<\/p>\n<\/details>\n<details>\n<summary>Is the angular artery always present?<\/summary>\n<p>No. In 57 cadaver hemifaces it was absent in 26.3%, and in 22.8% it reached the medial canthus through a branch of the ophthalmic artery (Kim 2014). An 18 MHz color Doppler study of 43 people found it absent in 11.62% (Khorasanizadeh 2023), and on 20 MHz Doppler it lay outside the deep pyriform space in 17 of 332 hemifaces, 5.1% (Franceschelli 2024).<\/p>\n<\/details>\n<details>\n<summary>Which ultrasound scanner is best for piriform fossa and nasolabial fold filler?<\/summary>\n<p>I pick the Suresult L20Pro at {{SRX_PRICE:31250}}, 95.0\/100 in my ranking: 20 MHz for the angular artery and the facial artery along the fold, 16 MHz presets to 40 mm for the bone and the deep cheek, Color, Power and PW Doppler and Needle Enhance with the probe, and 3 months of FaceAtlas AI. The Clarius L20 HD3 follows at 75.0, with a Pyriform preset and its PW Doppler and Vessel Depth AI on the Essentials membership.<\/p>\n<\/details>\n<\/div>\n<\/section>\n<section id=\"related\">\n<h2>Related guides<\/h2>\n<ul class=\"sr-nlf-related\">\n<li><a href=\"\/ultrasound-guided-filler-injections\/\">Ultrasound-guided filler injections across the face<\/a><\/li>\n<li><a href=\"\/lip-filler-technique-ultrasound\/\">Lip filler technique and the labial arteries on ultrasound<\/a><\/li>\n<li><a href=\"\/cannula-vs-needle-filler\/\">Needles and cannulas for facial filler, compared<\/a><\/li>\n<li><a href=\"\/vascular-occlusion-filler\/\">Vascular occlusion after filler<\/a><\/li>\n<li><a href=\"\/ultrasound-guided-filler-dissolving\/\">Dissolving HA filler under ultrasound<\/a><\/li>\n<li><a href=\"\/best-handheld-ultrasound-for-aesthetic-injectors\/\">Handheld ultrasound for aesthetic injectors, ranked<\/a><\/li>\n<li><a href=\"\/best-aesthetic-ultrasound-machines-for-facial-fillers\/\">Aesthetic ultrasound machines for facial fillers<\/a><\/li>\n<li><a href=\"\/l20-vs-l24-aesthetic-ultrasound\/\">L14 vs L20 vs L24 for aesthetic ultrasound<\/a><\/li>\n<li><a href=\"\/high-frequency-ultrasound-machine\/\">High-frequency ultrasound by depth and plane<\/a><\/li>\n<li><a href=\"\/best-portable-doppler-ultrasound\/\">Portable Doppler ultrasound: Color, Power and PW<\/a><\/li>\n<li><a href=\"\/aesthetic-ultrasound-cost\/\">What aesthetic ultrasound costs over five years<\/a><\/li>\n<li><a href=\"\/ultrasound-for-med-spas\/\">Ultrasound for med spas<\/a><\/li>\n<li><a href=\"\/faceatlas\/\">FaceAtlas AI facial mapping<\/a><\/li>\n<li><a href=\"\/specialty\/handheld-ultrasound-for-aesthetics\/\">Handheld ultrasound for aesthetic medicine<\/a><\/li>\n<\/ul>\n<\/section>\n<section id=\"sources\">\n<h2>Sources<\/h2>\n<ol class=\"sr-sources\">\n<li id=\"source-1\"><a href=\"https:\/\/doi.org\/10.1111\/jocd.70431\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Pourani MR, Ebrahimzade M, Goudarzi E, et al. Evaluation of facial artery course variations, diameters, and depth using Doppler ultrasonography: a systematic review and meta-analysis. J Cosmet Dermatol. 2025;24(9):e70431.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-2\"><a href=\"https:\/\/doi.org\/10.1093\/asjof\/ojae113\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Franceschelli A, Cazzulani M, Urso SU, et al. In vivo ultrasound study of the angular artery anatomy: practical indications for the treatment of the deep pyriform space. Aesthet Surg J Open Forum. 2024;6:ojae113.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-3\"><a href=\"https:\/\/doi.org\/10.1097\/SCS.0000000000007047\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Rauso R, Sesenna E, Fragola R, et al. Skin necrosis and vision loss or impairment after facial filler injection. J Craniofac Surg. 2020;31(8):2289\u20132293.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-4\"><a href=\"https:\/\/doi.org\/10.1016\/j.bjps.2025.03.001\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Velthuis PJ, Alfageme F, Cartier H, et al. The use of ultrasound imaging in aesthetic injectables: a modified Delphi consensus. J Plast Reconstr Aesthet Surg. 2025;104:33\u201337.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-5\"><a href=\"https:\/\/doi.org\/10.1007\/s00266-026-05744-z\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Gonzalez C, Garzon H, Bravo C, Kroumpouzos G. Ultrasound imaging of high-risk facial areas for injectables: a practical guide for common scenarios. Aesthetic Plast Surg. 2026;50(14):5881\u20135891.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-6\"><a href=\"https:\/\/doi.org\/10.1093\/asjof\/ojaf061\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Teixeira DA. A new time-saving technique for ultrasound-guided filler injection: a 3-year retrospective study. Aesthet Surg J Open Forum. 2025;7:ojaf061.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-7\"><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/8278485\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Yousif NJ, Gosain A, Matloub HS, et al. The nasolabial fold: an anatomic and histologic reappraisal. Plast Reconstr Surg. 1994;93(1):60\u201369.<\/a> \u2014 pubmed.ncbi.nlm.nih.gov, October 31, 2026<\/li>\n<li id=\"source-8\"><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/9326792\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Barton FE, Gyimesi IM. Anatomy of the nasolabial fold. Plast Reconstr Surg. 1997;100(5):1276\u20131280.<\/a> \u2014 pubmed.ncbi.nlm.nih.gov, October 31, 2026<\/li>\n<li id=\"source-9\"><a href=\"https:\/\/doi.org\/10.1111\/srt.13426\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Jeong KM, Seo JY, Kim A, et al. Ultrasonographic analysis of facial skin thickness in relation to age, site, sex, and body mass index. Skin Res Technol. 2023;29(8):e13426.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-10\"><a href=\"https:\/\/doi.org\/10.3390\/diagnostics14222544\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Vasconcelos-Berg R, Desyatnikova S, Bonavia P, et al. Best practices for the use of high-frequency ultrasound to guide aesthetic filler injections\u2014part 2: middle third of the face, nose, and tear troughs. Diagnostics (Basel). 2024;14(22):2544.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-11\"><a href=\"https:\/\/doi.org\/10.1097\/01.prs.0000265403.66886.54\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Rohrich RJ, Pessa JE. The fat compartments of the face: anatomy and clinical implications for cosmetic surgery. Plast Reconstr Surg. 2007;119(7):2219\u20132227.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-12\"><a href=\"https:\/\/doi.org\/10.1097\/PRS.0b013e31817123c6\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Rohrich RJ, Pessa JE, Ristow B. The youthful cheek and the deep medial fat compartment. Plast Reconstr Surg. 2008;121(6):2107\u20132112.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-13\"><a href=\"https:\/\/doi.org\/10.1097\/PRS.0000000000004364\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Schenck TL, Koban KC, Schlattau A, et al. The functional anatomy of the superficial fat compartments of the face: a detailed imaging study. Plast Reconstr Surg. 2018;141(6):1351\u20131359.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-14\"><a href=\"https:\/\/doi.org\/10.1097\/PRS.0000000000005080\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Cotofana S, Gotkin RH, Frank K, et al. The functional anatomy of the deep facial fat compartments: a detailed imaging-based investigation. Plast Reconstr Surg. 2019;143(1):53\u201363.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-15\"><a href=\"https:\/\/doi.org\/10.3390\/diagnostics14070716\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Hong GW, Song S, Park SY, et al. Why do nasolabial folds appear? Exploring the anatomical perspectives and the role of thread-based interventions. Diagnostics (Basel). 2024;14(7):716.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-16\"><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17230106\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Shaw RB, Kahn DM. Aging of the midface bony elements: a three-dimensional computed tomographic study. Plast Reconstr Surg. 2007;119(2):675\u2013681.<\/a> \u2014 pubmed.ncbi.nlm.nih.gov, October 31, 2026<\/li>\n<li id=\"source-17\"><a href=\"https:\/\/doi.org\/10.1007\/s00266-012-9904-3\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Mendelson B, Wong CH. Changes in the facial skeleton with aging: implications and clinical applications in facial rejuvenation. Aesthetic Plast Surg. 2012;36(4):753\u2013760.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-18\"><a href=\"https:\/\/doi.org\/10.1002\/jum.16433\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Boz U, K\u00f6se E. Ultrasonographic evaluation of facial artery in the nasolabial fold for gender differences and symmetry between hemifaces. J Ultrasound Med. 2024;43(6):1045\u20131051.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-19\"><a href=\"https:\/\/doi.org\/10.1007\/s00266-025-05319-4\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Hong GW, Kim SB, Koppert E, et al. Filler injection techniques and ultrasound observations: ultrasound-based classification of volume deficiency in nasolabial folds. Aesthetic Plast Surg. 2026;50(1):350\u2013357.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-20\"><a href=\"https:\/\/doi.org\/10.1093\/asj\/sjaa153\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Lee W, Kim JS, Moon HJ, Yang EJ. A safe Doppler ultrasound-guided method for nasolabial fold correction with hyaluronic acid filler. Aesthet Surg J. 2021;41(6):NP486\u2013NP492.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-21\"><a href=\"https:\/\/doi.org\/10.1097\/PRS.0000000000000099\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Yang HM, Lee JG, Hu KS, et al. New anatomical insights on the course and branching patterns of the facial artery: clinical implications of injectable treatments to the nasolabial fold and nasojugal groove. Plast Reconstr Surg. 2014;133(5):1077\u20131082.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-22\"><a href=\"https:\/\/doi.org\/10.1093\/asj\/sjz028\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Koziej M, Trybus M, Ho\u0142da M, et al. Anatomical map of the facial artery for facial reconstruction and aesthetic procedures. Aesthet Surg J. 2019;39(11):1151\u20131162.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-23\"><a href=\"https:\/\/doi.org\/10.1007\/s00266-024-04181-0\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Peng T, Yu H, Hong WJ, et al. Three-dimensional location of the facial artery in relation to the nasolabial fold in Asian people: a cadaveric CTA study. Aesthetic Plast Surg. 2024;48(20):4077\u20134085.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-24\"><a href=\"https:\/\/doi.org\/10.1186\/s41747-023-00363-8\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Pistoia F, Camerino PL, Ioppi A, et al. High-resolution US of the facial vessels with new facial vein landmarks for reconstructive surgery and dermal injection. Eur Radiol Exp. 2023;7(1):49.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-25\"><a href=\"https:\/\/doi.org\/10.1111\/jocd.13838\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Ten B, Kara T, Kaya T\u0130, et al. Evaluation of facial artery course variations and depth by Doppler ultrasonography. J Cosmet Dermatol. 2021;20(7):2247\u20132258.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-26\"><a href=\"https:\/\/doi.org\/10.1016\/j.bjps.2023.05.017\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Shen WW, Jiao CB, Ma JX, et al. Evaluation of facial artery course variations, diameters, and depth by Doppler ultrasonography. J Plast Reconstr Aesthet Surg. 2023;84:79\u201386.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-27\"><a href=\"https:\/\/doi.org\/10.1097\/01.GOX.0001018060.09892.fa\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Shetty PN, Mehta N, Romero JB, et al. High-resolution ultrasound mapping of the facial artery at the mandible and nasolabial fold to prevent filler-related complications. Plast Reconstr Surg Glob Open. 2024;12(Suppl 5):10\u201311.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-28\"><a href=\"https:\/\/doi.org\/10.1007\/s00266-025-04833-9\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Trzeciak M, Ostrowski P, G\u0142adysz T, et al. The depth of the facial artery, meta-analysis. Aesthetic Plast Surg. 2025;49(13):3793\u20133802.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-29\"><a href=\"https:\/\/doi.org\/10.1097\/PRS.0000000000002262\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Surek CK, Vargo J, Lamb J. Deep pyriform space: anatomical clarifications and clinical implications. Plast Reconstr Surg. 2016;138(1):59\u201364.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-30\"><a href=\"https:\/\/doi.org\/10.5624\/isd.20250075\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Bustamante FQF, Peyneau PD, Verner FS, et al. Depth and hemodynamics of the angular artery in the pyriform space: a cross-sectional study with Doppler ultrasonography. Imaging Sci Dent. 2025;55(3):310\u2013317.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-31\"><a href=\"https:\/\/doi.org\/10.1097\/01.DSS.0000452661.61916.b5\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Kim YS, Choi DY, Gil YC, et al. The anatomical origin and course of the angular artery regarding its clinical implications. Dermatol Surg. 2014;40(10):1070\u20131076.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-32\"><a href=\"https:\/\/doi.org\/10.1111\/jocd.15646\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Khorasanizadeh F, Delazar S, Gheidari O, et al. Anatomic evaluation of the normal variants of the arteries of face using color Doppler ultrasonography: implications for facial aesthetic procedures. J Cosmet Dermatol. 2023;22(6):1844\u20131851.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-33\"><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/26827055\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Tucunduva MJ, Tucunduva-Neto R, Saieg M, et al. Vascular mapping of the face: B-mode and Doppler ultrasonography study. Med Oral Patol Oral Cir Bucal. 2016;21(2):e135\u2013e141.<\/a> \u2014 pubmed.ncbi.nlm.nih.gov, October 31, 2026<\/li>\n<li id=\"source-34\"><a href=\"https:\/\/doi.org\/10.1093\/asj\/sjaa176\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Gombolevskiy V, Gelezhe P, Morozov S, et al. The course of the angular artery in the midface: implications for surgical and minimally invasive procedures. Aesthet Surg J. 2021;41(7):805\u2013813.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-35\"><a href=\"https:\/\/doi.org\/10.1111\/jocd.70698\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Yoon SE, Choi JW, Nam YS, Kim IB. Targeting the perialar space for enhanced nasolabial fold rejuvenation: a cadaveric study. J Cosmet Dermatol. 2026;25(2):e70698.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-36\"><a href=\"https:\/\/doi.org\/10.1111\/dsu.12431\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Pilsl U, Rosmarin W, Anderhuber F. The premaxillary space: a location for filler injection? Dermatol Surg. 2014;40(3):301\u2013304.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-37\"><a href=\"https:\/\/doi.org\/10.1007\/s00266-020-01762-7\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">de Maio M. MD Codes\u2122: a methodological approach to facial aesthetic treatment with injectable hyaluronic acid fillers. Aesthetic Plast Surg. 2021;45(2):690\u2013709.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-38\"><a href=\"https:\/\/doi.org\/10.1097\/GOX.0000000000003318\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Jung GS. Hyaluronic acid filler injection technique in multiple layers of the nasolabial fold. Plast Reconstr Surg Glob Open. 2020;8(12):e3318.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-39\"><a href=\"https:\/\/doi.org\/10.1055\/s-0043-1770078\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Lee W. Hyaluronic acid filler injection guided by Doppler ultrasound. Arch Plast Surg. 2023;50(4):348\u2013353.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-40\"><a href=\"https:\/\/doi.org\/10.1007\/s00266-025-04662-w\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Ramos HHA, Amaral VM, de Oliveira Afonso LP, et al. A combined treatment proposal for the empty deep pyriform space. Aesthetic Plast Surg. 2025;49(14):3951\u20133958.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-41\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P020023\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P020023, Restylane (Q-Med Scandinavia, Inc.), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-42\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P040024\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P040024, Perlane, Restylane-L and Restylane Lyft (Medicis Aesthetics Holdings, Inc.; Galderma Laboratories, L.P.), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-43\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P050047\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P050047, Juv\u00e9derm 24HV, 30 and 30HV and Juv\u00e9derm Ultra XC (Inamed Corporation), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-44\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P110033\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P110033, Juv\u00e9derm Vollure XC (Allergan), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-45\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P090016\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P090016, Belotero Balance (Merz Pharmaceuticals, LLC), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-46\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P140029\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P140029, Restylane Refyne and Restylane Defyne (Q-Med AB; Galderma Laboratories, L.P.), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-47\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P160042\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P160042, Revanesse Ultra, now Revanesse Versa (Prollenium Medical Technologies Inc.), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-48\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P170002\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P170002, RHA (Teoxane S.A.), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-49\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P240022\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P240022, Evolysse (Symatese; Evolus, Inc.), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-50\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P240008\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P240008, saypha MagIQ (CROMA-PHARMA GmbH), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-51\"><a href=\"https:\/\/doi.org\/10.1111\/jocd.71046\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Lee W, Ascher B, Yi K, et al. Study on safe filler injection techniques using cutting-edge ultrasound technology. J Cosmet Dermatol. 2026;25(7):e71046.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-52\"><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfpma\/pma.cfm?id=P050052\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. Premarket approval P050052, Radiesse (BioForm Medical, Inc.), with supplements.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-53\"><a href=\"https:\/\/doi.org\/10.1111\/jocd.14492\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Rocha PS, Guerra TA, Teixeira DA. Description of a safe Doppler ultrasound-guided technique for hyaluronic acid filler in the face\u2014a method to avoid adverse vascular events. J Cosmet Dermatol. 2022;21(7):2783\u20132787.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-54\"><a href=\"https:\/\/doi.org\/10.1111\/jocd.13247\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Cotofana S, Lowry N, Devineni A, et al. Can smiling influence the blood flow in the facial vein?\u2014An experimental study. J Cosmet Dermatol. 2020;19(2):321\u2013327.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-55\"><a href=\"https:\/\/doi.org\/10.3390\/diagnostics14161718\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Sigrist R, Desyatnikova S, Chammas MC, Vasconcelos-Berg R. Best practices for the use of high-frequency ultrasound to guide aesthetic filler injections\u2014part 1: upper third of the face. Diagnostics (Basel). 2024;14(16):1718.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-56\"><a href=\"https:\/\/doi.org\/10.1093\/asj\/sjac272\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Calomeni M, Bravo BSF, et al. Precision of soft-tissue filler injections: an ultrasound-based verification study. Aesthet Surg J. 2023;43(3):353\u2013361.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-57\"><a href=\"https:\/\/doi.org\/10.3390\/diagnostics13172761\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Salvia G, Zerbinati N, Manzo Margiotta F, et al. Ultra-high-frequency ultrasound as an innovative imaging evaluation of hyaluronic acid filler in nasolabial folds. Diagnostics (Basel). 2023;13(17):2761.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-58\"><a href=\"https:\/\/doi.org\/10.1097\/PRS.0000000000005848\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Qiao J, Jia QN, Jin HZ, et al. Long-term follow-up of longevity and diffusion pattern of hyaluronic acid in nasolabial fold correction through high-frequency ultrasound. Plast Reconstr Surg. 2019;144(2):189e\u2013196e.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-59\"><a href=\"https:\/\/doi.org\/10.1007\/s00266-022-02967-8\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Jiang L, Yuan L, Li Z, et al. High-frequency ultrasound of facial filler materials in the nasolabial groove. Aesthetic Plast Surg. 2022;46(6):2972\u20132978.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-60\"><a href=\"https:\/\/doi.org\/10.1111\/j.1600-0846.2010.00428.x\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Grippaudo FR, Mattei M. High-frequency sonography of temporary and permanent dermal fillers. Skin Res Technol. 2010;16(3):265\u2013269.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-61\"><a href=\"https:\/\/doi.org\/10.3390\/diagnostics16111587\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Sigrist RMS, Gonzalez C, et al. Doppler ultrasound findings in filler-related facial vascular adverse events: an international multicenter study. Diagnostics (Basel). 2026;16(11):1587.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-62\"><a href=\"https:\/\/doi.org\/10.1016\/j.ultrasmedbio.2025.07.003\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Chammas MC, Sigrist R, Alfageme F, et al. WFUMB position paper: consensus on best practice in aesthetic dermatologic ultrasound. Ultrasound Med Biol. 2025;51(11):2173\u20132193.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-63\"><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC7830059\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Mlosek RK, Migda B, Migda M, et al. High-frequency ultrasound in the 21st century. J Ultrason. 2020;20(83):e233\u2013e241.<\/a> \u2014 pmc.ncbi.nlm.nih.gov, October 31, 2026<\/li>\n<li id=\"source-64\"><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC7835656\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Jagu\u015b D, Skrzypek E, Migda B, et al. Usefulness of Doppler sonography in aesthetic medicine. J Ultrason. 2020;20(83):e268\u2013e272.<\/a> \u2014 pmc.ncbi.nlm.nih.gov, October 31, 2026<\/li>\n<li id=\"source-65\"><a href=\"https:\/\/doi.org\/10.4081\/ejh.2024.3912\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Veronese S, Costa E, Portuese A, et al. Histological analysis of the dermal and hypodermal layers of the face and correlation with high-frequency 24 MHz ultrasonography and elastosonography. Eur J Histochem. 2024;68(2):3912.<\/a> \u2014 doi.org, October 31, 2026<\/li>\n<li id=\"source-66\"><a href=\"https:\/\/teachmeanatomy.info\/neck\/viscera\/pharynx\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Pazhaniappan N. The pharynx. TeachMeAnatomy. Updated November 6, 2025.<\/a> \u2014 teachmeanatomy.info, October 31, 2026<\/li>\n<li id=\"source-67\"><a href=\"https:\/\/store.clarius.com\/products\/l20-hd3-handheld-ultrasound-scanner\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Clarius Mobile Health. Clarius L20 HD3 handheld ultrasound scanner, store page with Essentials and Clarius Care plans.<\/a> \u2014 store.clarius.com, October 31, 2026<\/li>\n<li id=\"source-68\"><a href=\"https:\/\/clarius.com\/specialties\/aesthetics\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Clarius Mobile Health. Clarius for aesthetics.<\/a> \u2014 clarius.com, October 31, 2026<\/li>\n<li id=\"source-69\"><a href=\"https:\/\/clarius.com\/classroom\/vessel-depth-ai-for-aesthetics\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Clarius Mobile Health. Vessel Depth AI for aesthetics.<\/a> \u2014 clarius.com, October 31, 2026<\/li>\n<li id=\"source-70\"><a href=\"https:\/\/clarius.com\/classroom\/center-guide\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Clarius Mobile Health. Center Guide.<\/a> \u2014 clarius.com, October 31, 2026<\/li>\n<li id=\"source-71\"><a href=\"https:\/\/clarius.com\/classroom\/pyriform-fossa-mapping-and-injections\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Clarius Mobile Health. Pyriform fossa mapping and injections.<\/a> \u2014 clarius.com, October 31, 2026<\/li>\n<li id=\"source-72\"><a href=\"https:\/\/clarius.com\/classroom\/visualizing-the-angular-artery-in-the-nasolabial-fold-for-fillers\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Clarius Mobile Health. Visualizing the angular artery in the nasolabial fold for fillers.<\/a> \u2014 clarius.com, October 31, 2026<\/li>\n<li id=\"source-73\"><a href=\"https:\/\/store.clarius.com\/products\/l15-hd3-handheld-ultrasound-scanner\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Clarius Mobile Health. Clarius L15 HD3 handheld ultrasound scanner, store page.<\/a> \u2014 store.clarius.com, October 31, 2026<\/li>\n<li id=\"source-74\"><a href=\"https:\/\/www.mindray.com\/na\/products\/ultrasound\/portable-ultrasound-machines\/handheld-ultrasound\/te-air-e5m-handheld-ultrasound\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Mindray. TE Air e5M handheld ultrasound, product page and datasheet P\/N 0002-08-40803 Rev 2.0.<\/a> \u2014 mindray.com, October 31, 2026<\/li>\n<li id=\"source-75\"><a href=\"https:\/\/www.mindray.com\/na\/products\/ultrasound\/portable-ultrasound-machines\/handheld-ultrasound\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Mindray. Handheld ultrasound: the TE Air family.<\/a> \u2014 mindray.com, October 31, 2026<\/li>\n<li id=\"source-76\"><a href=\"https:\/\/mindrayna.my.site.com\/teair\/product-details?c__productId=01tPq00000GISELIA5\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Mindray North America store. TE Air e5M.<\/a> \u2014 mindrayna.my.site.com, October 31, 2026<\/li>\n<li id=\"source-77\"><a href=\"https:\/\/www.accessdata.fda.gov\/cdrh_docs\/pdf24\/K240906.pdf\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">U.S. Food and Drug Administration. 510(k) K240906, TE Air Diagnostic Ultrasound System (Shenzhen Mindray Bio-Medical Electronics Co., Ltd.), July 23, 2024.<\/a> \u2014 accessdata.fda.gov, October 31, 2026<\/li>\n<li id=\"source-78\"><a href=\"https:\/\/www.gehealthcare.com\/products\/ultrasound\/handheld-ultrasound\/vscan-air-sl\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">GE HealthCare. Vscan Air SL.<\/a> \u2014 gehealthcare.com, October 31, 2026<\/li>\n<li id=\"source-79\"><a href=\"https:\/\/www.gehealthcare.com\/en-us\/shop\/equipment\/vscan-air-sl\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">GE HealthCare store. Vscan Air SL.<\/a> \u2014 gehealthcare.com, October 31, 2026<\/li>\n<li id=\"source-80\"><a href=\"https:\/\/vscanair-support.gehealthcare.com\/support\/solutions\/articles\/47001172608-specifications\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">GE HealthCare. Vscan Air support: specifications.<\/a> \u2014 vscanair-support.gehealthcare.com, October 31, 2026<\/li>\n<li id=\"source-81\"><a href=\"https:\/\/vscanair-support.gehealthcare.com\/support\/solutions\/articles\/47001169456-about-vscan-air\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">GE HealthCare. Vscan Air support: about Vscan Air.<\/a> \u2014 vscanair-support.gehealthcare.com, October 31, 2026<\/li>\n<li id=\"source-82\"><a href=\"https:\/\/vscanair-support.gehealthcare.com\/support\/solutions\/articles\/47001169992-configuration\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">GE HealthCare. Vscan Air support: configuration.<\/a> \u2014 vscanair-support.gehealthcare.com, October 31, 2026<\/li>\n<li id=\"source-83\"><a href=\"https:\/\/vscanair-support.gehealthcare.com\/support\/solutions\/articles\/47001185002-how-long-can-i-scan-with-vscan-air-\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">GE HealthCare. Vscan Air support: how long can I scan with Vscan Air?<\/a> \u2014 vscanair-support.gehealthcare.com, October 31, 2026<\/li>\n<li id=\"source-84\"><a href=\"https:\/\/www.butterflynetwork.com\/iq3-specs\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Butterfly Network. Butterfly iQ3 specifications.<\/a> \u2014 butterflynetwork.com, October 31, 2026<\/li>\n<li id=\"source-85\"><a href=\"https:\/\/www.butterflynetwork.com\/pricing\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Butterfly Network. Pricing and memberships.<\/a> \u2014 butterflynetwork.com, October 31, 2026<\/li>\n<li id=\"source-86\"><a href=\"https:\/\/manual.butterflynetwork.com\/butterfly-iq3-manual_rev-i-en.pdf\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Butterfly Network. Butterfly iQ3 user manual, revision I.<\/a> \u2014 manual.butterflynetwork.com, October 31, 2026<\/li>\n<li id=\"source-87\"><a href=\"https:\/\/www.usa.philips.com\/healthcare\/product\/HC989605451352\/lumifyl124lineararraytransducer\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Philips. Lumify L12-4 linear array transducer.<\/a> \u2014 usa.philips.com, October 31, 2026<\/li>\n<li id=\"source-88\"><a href=\"https:\/\/www.usa.philips.com\/healthcare\/sites\/lumify-handheld-ultrasound\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Philips. Lumify handheld ultrasound.<\/a> \u2014 usa.philips.com, October 31, 2026<\/li>\n<li id=\"source-89\"><a href=\"https:\/\/www.usa.philips.com\/healthcare\/sites\/lumify\/support\/faq\/product-offering\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Philips. Lumify product offering, frequently asked questions.<\/a> \u2014 usa.philips.com, October 31, 2026<\/li>\n<li id=\"source-90\"><a href=\"https:\/\/www.usa.philips.com\/healthcare\/sites\/lumify-handheld-ultrasound\/specialty\/anesthesiology\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Philips. Lumify for anesthesiology.<\/a> \u2014 usa.philips.com, October 31, 2026<\/li>\n<li id=\"source-91\"><a href=\"https:\/\/www.partssource.com\/parts\/philips\/453561734017\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">PartsSource. Philips Lumify L12-4 transducer, part 453561734017.<\/a> \u2014 partssource.com, October 31, 2026<\/li>\n<li id=\"source-92\"><a href=\"https:\/\/suresultmed.com\/shop\/handheld-ultrasounds\/l20pro-16-20mhz-high-frequency-linear-probe-ultrasound\/\">Suresult L20Pro.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-93\"><a href=\"https:\/\/suresultmed.com\/shop\/handheld-ultrasounds\/l24-pro-18-24mhz-high-frequency-linear-probe-ultrasound\/\">Suresult L24Pro.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-94\"><a href=\"https:\/\/suresultmed.com\/shop\/handheld-ultrasounds\/l14pro-10-14mhz-high-frequency-linear-probe-ultrasound\/\">Suresult L14Pro.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-95\"><a href=\"https:\/\/suresultmed.com\/shop\/handheld-ultrasounds\/l24-high-frequency-linear-probe-ultrasound\/\">Suresult L24.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-96\"><a href=\"https:\/\/suresultmed.com\/shop\/handheld-ultrasounds\/l20-high-frequency-16-20-mhz-linear-wireless-ultrasound-for-msk-skin-and-facial-plastic-surgery-injections\/\">Suresult L20.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-97\"><a href=\"https:\/\/suresultmed.com\/shop\/handheld-ultrasounds\/l14-linear-wireless-ultrasound-high-frequency-imaging\/\">Suresult L14.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-98\"><a href=\"https:\/\/suresultmed.com\/faceatlas\/\">FaceAtlas AI.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-99\"><a href=\"https:\/\/suresultmed.com\/faceatlas\/claim\/\">FaceAtlas AI claim page.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-100\"><a href=\"https:\/\/suresultmed.com\/shop\/software-ai\/faceatlas-ai-monthly-license-ai-skin-ultrasound-software\/\">FaceAtlas AI monthly license.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-101\"><a href=\"https:\/\/suresultmed.com\/shop\/software-ai\/faceatlas-ai-yearly-license-ai-skin-ultrasound-software\/\">FaceAtlas AI yearly license.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-102\"><a href=\"https:\/\/suresultmed.com\/shop\/software-ai\/faceatlas-ai-lifetime-license-ai-skin-ultrasound-software\/\">FaceAtlas AI lifetime license.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-103\"><a href=\"https:\/\/suresultmed.com\/shop\/accessories\/aesthetic-ultrasound-gel-pads\/\">Suresult aesthetic ultrasound gel pads.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<li id=\"source-104\"><a href=\"https:\/\/suresultmed.com\/certifications-compliance\/\">Suresult certifications and compliance.<\/a> \u2014 suresultmed.com, October 31, 2026<\/li>\n<\/ol>\n<\/section>\n<section class=\"sr-final-cta\" id=\"start\">\n<h2>Which Suresult probe to order for the fold and the fossa<\/h2>\n<p>Order the L20Pro at {{SRX_PRICE:31250}} if you treat the fold and the fossa together: it is the one probe I would buy for both arteries and every plane down to the bone. If your work stays in the dermis and the first 25 mm, the L24Pro at {{SRX_PRICE:30649}} gives you 24 MHz, the highest frequency in the line. If you want the L20Pro&#8217;s band and presets on 192 elements with FaceAtlas AI on a key, the L20 at {{SRX_STORE:28582}} covers the same planes. Each ships within 24 hours worldwide with duties and customs paid; the warranty runs 2 years and extends to 3 or 5, the worry-free trial runs 30 days from delivery, and the price shown at checkout is the price paid: No Hidden Fees.<\/p>\n<div class=\"sr-nlf-buy\"><a class=\"sr-buy-cta\" role=\"button\" href=\"https:\/\/suresultmed.com\/shop\/handheld-ultrasounds\/l20pro-16-20mhz-high-frequency-linear-probe-ultrasound\/\">See the L20Pro<\/a><a class=\"sr-buy-cta\" role=\"button\" href=\"https:\/\/suresultmed.com\/shop\/handheld-ultrasounds\/l24-pro-18-24mhz-high-frequency-linear-probe-ultrasound\/\">See the L24Pro<\/a><a class=\"sr-buy-cta\" role=\"button\" href=\"https:\/\/suresultmed.com\/shop\/handheld-ultrasounds\/l20-high-frequency-16-20-mhz-linear-wireless-ultrasound-for-msk-skin-and-facial-plastic-surgery-injections\/\">See the L20<\/a><\/div>\n<p><button class=\"sr-crisp-consult-btn\" type=\"button\" data-sr-crisp-open onclick=\"window.$crisp=window.$crisp||[];window.$crisp.push(['do','chat:open']);\">ONLINE EXPERT CONSULT<\/button><\/p>\n<\/section>\n<nav id=\"sr-nlf-toc\" class=\"sr-light-toc sr-sticky-toc sr-article-toc\" data-suresult-toc data-sr-hide-on-wide-table aria-label=\"Piriform fossa and nasolabial fold guide navigation\">\n<div class=\"sr-light-toc__head\">\n<div class=\"sr-light-toc__title\">On this page<\/div>\n<p><span class=\"sr-light-toc__progress\" id=\"sr-nlf-progress\">0%<\/span><\/p>\n<\/div>\n<div class=\"sr-light-toc__links\"><a href=\"#quick-answer\">Quick answer<\/a><a href=\"#comparison\">Compare scanners<\/a><a href=\"#picks\">Quick picks<\/a><a href=\"#buy\">Where to buy<\/a><a href=\"#why-map\">Why map first<\/a><a href=\"#anatomy\">Fold anatomy<\/a><a href=\"#deep-pyriform\">Angular artery<\/a><a href=\"#piriform\">Piriform fossa filler<\/a><a href=\"#fold-technique\">Fold technique<\/a><a href=\"#workflow\">Map, inject, rescan<\/a><a href=\"#frequency\">Frequency and depth<\/a><a href=\"#ranked\">Ranked reviews<\/a><a href=\"#cost\">Five-year cost<\/a><a href=\"#methodology\">Scoring<\/a><a href=\"#faq\">FAQ<\/a><a href=\"#sources\">Sources<\/a><\/div>\n<p class=\"sr-light-toc__note\">Choose your probe by the deepest plane you fill.<\/p>\n<p><button class=\"sr-crisp-consult-btn\" type=\"button\" data-sr-crisp-open onclick=\"window.$crisp=window.$crisp||[];window.$crisp.push(['do','chat:open']);\">ONLINE EXPERT CONSULT<\/button><\/p>\n<\/nav>\n<\/div>\n<p><script data-nitro-exclude data-cfasync=\"false\">(function(){var nav=document.getElementById(\"sr-nlf-toc\");if(!nav)return;var links=[].slice.call(nav.querySelectorAll('a[href^=\"#\"]'));var map={},order=[];links.forEach(function(a){var id=a.getAttribute(\"href\").slice(1);var el=document.getElementById(id);if(el){map[id]=a;order.push(el)}});function setActive(a){if(!a)return;links.forEach(function(l){l.classList.remove(\"sr-toc-active\")});a.classList.add(\"sr-toc-active\")}function activeFromScroll(){var mark=scrollY+innerHeight*0.18,best=null;order.forEach(function(el){if(el.getBoundingClientRect().top+scrollY<=mark)best=el});if(!best){if(order.length){best=order[0]}}if(best)setActive(map[best.id])}if(\"IntersectionObserver\"in window){var io=new IntersectionObserver(function(es){es.forEach(function(e){if(e.isIntersecting)setActive(map[e.target.id])})},{rootMargin:\"-12% 0px -72% 0px\"});order.forEach(function(el){io.observe(el)})}var pct=document.getElementById(\"sr-nlf-progress\"),tick=false;function onScroll(){if(tick)return;tick=true;requestAnimationFrame(function(){if(pct){var max=document.documentElement.scrollHeight-innerHeight;pct.textContent=(max>0?Math.min(100,Math.round(scrollY\/max*100)):0)+\"%\"}activeFromScroll();tick=false})}window.addEventListener(\"scroll\",onScroll,{passive:true});activeFromScroll();})();<\/script><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"Article\", \"@id\": 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{\"@type\": \"ListItem\", \"position\": 6, \"name\": \"Philips Lumify L12-4\", \"url\": \"https:\/\/suresultmed.com\/nasolabial-fold-filler-ultrasound\/#rank-6\"}]}, {\"@type\": \"FAQPage\", \"@id\": \"https:\/\/suresultmed.com\/nasolabial-fold-filler-ultrasound\/#faq\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much filler goes in the piriform fossa per side?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"0.3 mL per side on the bone for a bone-deficient upper fold, placed by needle at the MD Codes point NL1 (de Maio 2021). The spaces beside it take more: 0.5 to 1 cc per perialar space through a 23G cannula (Yoon 2026) and 0.5 to 0.8 mL in the premaxillary space (Pilsl 2014), and Jung's layered technique, which starts in the deep pyriform space, uses 1.0 to 1.5 mL per side across all its layers (Jung 2020).\"}}, {\"@type\": \"Question\", \"name\": \"What is the deep pyriform space, and what does filler there do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A space on the bone beside the base of the nose, 1.1 \u00d7 0.9 cm in cadaver dissection, bounded medially by the depressor septi nasi and laterally and superficially by the deep medial cheek fat and the lip elevators, with the angular artery in the septum of its roof (Surek 2016). Filler there holds its place as volume rises and projects the tissue forward (Cotofana 2019), which suits the paranasal depression of a type 1 fold (Hong 2024).\"}}, {\"@type\": \"Question\", \"name\": \"Where is the piriform fossa for filler, and is it the same as the one in the throat?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Beside the base of the nose: the piriform fossa injectors fill is the paranasal hollow over the pyriform aperture beside the ala, where the deep pyriform space sits on the maxilla (Surek 2016). The throat's piriform fossae, also called the piriform sinuses, are a different structure: they lie in the laryngopharynx on each side of the laryngeal inlet, in the part of the pharynx that runs from the upper border of the epiglottis to the lower border of the cricoid cartilage at C6 (Pazhaniappan 2025).\"}}, {\"@type\": \"Question\", \"name\": \"Which facial filler area carries the most vascular risk?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The nose, by published case count: of 164 published cases of skin necrosis and vision loss after filler, 44.5% followed nasal injection, 21% the glabella and 15% the nasolabial fold, third on the list, ahead of the forehead at 10% (Rauso 2020). For the fossa, the 2025 Delphi panel makes vessel mapping mandatory before injection, with the forehead, glabella, temple and nose (Velthuis 2025).\"}}, {\"@type\": \"Question\", \"name\": \"How deep is the facial artery at the nasolabial fold?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"6 to 8 mm on Doppler in the pooled means, which deepen from the jaw to the ala: 6.27 mm at the mandibular border, 7.95 mm at the cheilion and 8.04 mm at the lateral ala, with the artery seen at 99.8 to 100% of those levels (Pourani 2025). One 22\u20138 MHz series found the reverse, 6.8 mm at the jaw and 4.3 mm at the alar base on the right (Pistoia 2023). Single faces run from 2.5 mm at its origin by the mandible to 23.5 mm at the nasal ala (Ten 2021).\"}}, {\"@type\": \"Question\", \"name\": \"Does the facial artery run medial to, across or lateral to the fold?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"All three: across 610 Doppler-mapped arteries it ran medial to the fold in 46.2%, crossed it from medial to lateral in 22.5% and from lateral to medial in 18.5%, and ran lateral in 12.0% (Pourani 2025). In 80 folds scanned before filler the artery lay lateral to the fold in 31% (Lee W 2021).\"}}, {\"@type\": \"Question\", \"name\": \"Where does the angular artery run over the piriform fossa?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"In the roof of the deep pyriform space, inside the septum between the space and the deep medial cheek fat (Surek 2016), a mean 3.6 mm under the skin and 5.1 mm above the bone on 20 MHz Doppler. Across 332 hemifaces it lay within 3 mm of the bone in 38.6%, 1 mm or less from it in 2.4% and practically on it in another 0.6%, and inside the space in 94.9% (Franceschelli 2024).\"}}, {\"@type\": \"Question\", \"name\": \"How much filler goes in each nasolabial fold?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"0.3 to 1.0 mL per side by MD Codes, scaled to need: 0.3 mL on the bone at NL1 for bone deficiency, 0.3 mL at NL1 and 0.2 mL at NL2 for a mild to moderate fold, and 0.5, 0.3 and 0.2 mL at NL1 to NL3, 1.0 mL in all, for a severe one (de Maio 2021). Under Doppler, Lee W 2026 injected a mean of 0.98 mL on the left (0.5\u20132 mL) and 0.95 mL on the right (0.5\u20131.5 mL) across 33 patients.\"}}, {\"@type\": \"Question\", \"name\": \"What Doppler settings find the facial and angular arteries?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Slow-flow settings: the velocity scale near 3 cm\/s, PRF and wall filter dropped to suit it, plenty of gel and next to no probe pressure (Sigrist 2026). At the fossa one series ran Doppler at 5.0 MHz with a PRF of 0.5 to 0.8 kHz and told the artery from the angular vein by its pulsatile spectral trace (Bustamante 2025); flow that stops entirely under probe pressure is venous (Lee W 2023).\"}}, {\"@type\": \"Question\", \"name\": \"What frequency does a scanner need for nasolabial fold and piriform mapping?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"At least 15 MHz on a linear probe, with B-mode, Color and spectral Doppler mandatory and Power Doppler recommended, by the 2025 Delphi consensus, which also makes mapping mandatory at the pyriform fossa (Velthuis 2025). For these sites that means 20 MHz on a 10 mm preset for the angular artery at 3.6 mm and the facial artery's 6 to 8 mm means, and 16 MHz on a 20 mm preset or deeper for the bone at 9.11 to 11.4 mm.\"}}, {\"@type\": \"Question\", \"name\": \"How long does vessel mapping add before a nasolabial fold injection?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Under 3 minutes: across 503 patients the map took 1 to 3 minutes, and at the fold it found an artery wider than 0.8 mm under 43 of 324 planned sites, 13.2% (Teixeira 2025).\"}}, {\"@type\": \"Question\", \"name\": \"Should you rescan after the bolus, and what does the rescan check?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes: after insertion the probe goes back to confirm the cannula sits outside the vessels and in the planned plane, and every pass is rechecked (Sigrist 2024); a perfusion check closes the session as the third step of Rocha's method in 480 patients at 18 MHz (Rocha 2022).\"}}, {\"@type\": \"Question\", \"name\": \"Is the angular artery always present?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. In 57 cadaver hemifaces it was absent in 26.3%, and in 22.8% it reached the medial canthus through a branch of the ophthalmic artery (Kim 2014). An 18 MHz color Doppler study of 43 people found it absent in 11.62% (Khorasanizadeh 2023), and on 20 MHz Doppler it lay outside the deep pyriform space in 17 of 332 hemifaces, 5.1% (Franceschelli 2024).\"}}, {\"@type\": \"Question\", \"name\": \"Which ultrasound scanner is best for piriform fossa and nasolabial fold filler?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"I pick the Suresult L20Pro at {{SRX_PRICE:31250}}, 95.0\/100 in my ranking: 20 MHz for the angular artery and the facial artery along the fold, 16 MHz presets to 40 mm for the bone and the deep cheek, Color, Power and PW Doppler and Needle Enhance with the probe, and 3 months of FaceAtlas AI. The Clarius L20 HD3 follows at 75.0, with a Pyriform preset and its PW Doppler and Vessel Depth AI on the Essentials membership.\"}}]}, {\"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/suresultmed.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Device Review \\u0026 Insights\", \"item\": \"https:\/\/suresultmed.com\/device-review-and-insights\/\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Piriform Fossa and Nasolabial Fold Filler: Mapping the Angular and Facial Arteries on Ultrasound, Plus the 6\u00a0Best Scanners (2026)\", \"item\": \"https:\/\/suresultmed.com\/nasolabial-fold-filler-ultrasound\/\"}]}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Relleno de la fosa piriforme e inyecci\u00f3n en el surco nasolabial bajo ecograf\u00eda: trayecto y profundidad de la arteria facial seg\u00fan el nivel, la arteria angular y una clasificaci\u00f3n de 6 ec\u00f3grafos.<\/p>","protected":false},"author":1,"featured_media":37698,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"Piriform Fossa Filler and NLF Artery Mapping: 6 Best Scanners","_seopress_titles_desc":"Piriform fossa filler and nasolabial fold injection on ultrasound: the facial artery course and depth by level, the angular artery, plus 6 scanners ranked.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"https:\/\/suresultmed.com\/nasolabial-fold-filler-ultrasound\/","_seopress_social_fb_title":"Piriform Fossa Filler and NLF Artery Mapping: 6 Best Scanners","_seopress_social_fb_desc":"Piriform fossa filler and nasolabial fold injection on ultrasound: the facial artery course and depth by level, the angular artery, plus 6 scanners ranked.","_seopress_social_fb_img":"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-cover.webp","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"Piriform Fossa Filler and NLF Artery Mapping: 6 Best Scanners","_seopress_social_twitter_desc":"Piriform fossa filler and nasolabial fold injection on ultrasound: the facial artery course and depth by level, the angular artery, plus 6 scanners ranked.","_seopress_social_twitter_img":"https:\/\/suresultmed.com\/wp-content\/uploads\/nasolabial-fold-filler-ultrasound-cover.webp","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[19],"tags":[301,305,304,302],"class_list":["post-37687","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-device-review-and-insights","tag-aesthetic-ultrasound-machine","tag-facial-ultrasound","tag-suresult-l20","tag-ultrasound-for-facial-fillers"],"acf":[],"_links":{"self":[{"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/posts\/37687","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/comments?post=37687"}],"version-history":[{"count":7,"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/posts\/37687\/revisions"}],"predecessor-version":[{"id":37756,"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/posts\/37687\/revisions\/37756"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/media\/37698"}],"wp:attachment":[{"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/media?parent=37687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/categories?post=37687"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/suresultmed.com\/es\/wp-json\/wp\/v2\/tags?post=37687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}