ArticleRadiologia brasileira
U-SMAS: ultrasound findings of the superficial musculoaponeurotic system.
Article in Radiologia brasileira. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- High-Frequency Ultrasound Assessment of Female Genital Rejuvenation.Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine · 2026Observational
- Italian Consensus and Review in Lower Face Mimetic Muscle Treatment with Botulinum Toxin-A.Toxins · 2026Review
- Proposal for an Expanded Classification of the Superficial Musculoaponeurotic System (SMAS) in the Human Forehead, Based on Anatomical and Microscopic Study.Life (Basel, Switzerland) · 2026Article
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The superficial musculoaponeurotic system (SMAS) is a complex fibrous network connecting facial muscles to the dermis, with varying morphological characteristics across different facial regions. Recent studies have identified five distinct types of SMAS morphology, highlighting the need for region-specific interventions in facial rejuvenation. This pictorial essay explores ultrasound imaging of the SMAS using ultra-high frequency (24-33 MHz) probes, known as U-SMAS. Analysis of 186 full-face U-SMAS scans revealed consistent patterns in the facial and neck layers, with regional variations aligning with the Sandulescu classifications: type I (preparotideal); type II (chin and lip); type III (eyelid); type IV (temporal and parotideal); and type V (cervical). Understanding these morphological differences is crucial for accurate interpretation of ultrasound images and for optimizing pre-procedural assessments to ensure that aesthetic treatments are safe and effective. Knowledge of the SMAS architecture enhances the ability to visualize facial and neck anatomy accurately, particularly through U-SMAS imaging, ensuring comprehensive patient care in rejuvenation procedures.
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