Chaves Bellote Talitha Possagno, Miot Helio Amante
Instituto La Beaute (Private Clinic), Curitiba, PR, Brazil.
Departamento de Dermatologia da FMB-Unesp, Botucatu, SP, Brazil.
Clin Cosmet Investig Dermatol. 2021 Nov 3;14:1613-1619. doi: 10.2147/CCID.S331354. eCollection 2021.
Microfocused ultrasound with visualization (MFU-V) is a recently developed technology that improves the laxity of the skin due to its capacity of precise focal heating of the dermis and deep layers, consequently inducing neocollagenesis and elastin remodeling.
This case series aimed to assess the efficacy of MFU-V in improving skin laxity, leading to the slimming of the lower third of the face in women who desired to naturally improve the shape of their faces.
Four women between 29 and 36 years were submitted to a specific protocol with 4-MHz - 4.5-mm and 7-MHz - 3.0-mm transducers (Ulthera) at the buccinators region in one session, and patients were evaluated after 180 days. GAIS (Global Aesthetic Improvement Scale) was assessed through standardized photographs (D0 vs D180).
All subjects perceived the slimming of the face after 180 days, as well as the improvement of skin laxity and contour. The practitioner and all the patients were highly satisfied with the results. The assessment of GAIS (D0 vs D180) resulted in score 3 (very improved) for three participants, and score 2 (improved) for one woman. All the patients classified pain experienced during the procedure as mild to moderate.
We reported a technique that uses microfocused ultrasound with visualization leading to the slimming of the lower third of the face. Further systematic studies should be performed to understand the mechanism underneath the results and to maximize its performance.
可视化微聚焦超声（MFU-V）是一项最近开发的技术，因其能够精确聚焦加热真皮层和深层组织，从而改善皮肤松弛度，进而诱导新胶原蛋白生成和弹性蛋白重塑。
本病例系列旨在评估MFU-V改善皮肤松弛度的疗效，从而使希望自然改善面部轮廓的女性面部下三分之一变瘦。
4名年龄在29至36岁之间的女性接受了一项特定方案，在一次治疗中使用4兆赫-4.5毫米和7兆赫-3.0毫米的换能器（Ulthera）对咬肌区域进行治疗，并在180天后对患者进行评估。通过标准化照片（D0对比D180）评估全球美学改善量表（GAIS）。
所有受试者在180天后均感觉到面部变瘦，以及皮肤松弛度和轮廓得到改善。医生和所有患者对结果都非常满意。GAIS（D0对比D180）评估结果显示，三名参与者得分为3分（改善非常明显），一名女性得分为2分（有所改善）。所有患者将治疗过程中经历的疼痛分类为轻度至中度。
我们报道了一种使用可视化微聚焦超声导致面部下三分之一变瘦的技术。应进行进一步的系统研究，以了解结果背后的机制并使其性能最大化。
