Goo Boncheol, Kim Eunjae, Yoon Song Eun, Wong Isaac Kai Jie, Bautzer Carlos, Basmage Lucas, Leite Patricia, Shin Dongwoo, Wan Jovian, Yi Kyu-Ho
Naeum Dermatology and Aesthetic Clinic, Seoul, Korea.
Classys Inc, Seoul, Korea.
Aesthetic Plast Surg. 2025 May 12. doi: 10.1007/s00266-025-04890-0.
There are several treatment options to improve a double chin, such as contour injections, thread lifting, and double chin liposuction. However, the results of these treatments can be minimal or have a short-lasting effect. Additionally, these treatments may lead to worsened scarring due to repeated skin penetration and can cause prolonged discomfort. The high-intensity focused ultrasound (HIFU) is a non-invasive ultrasound lifting treatment that can improve a double chin without the need for surgical procedures, so the HIFU is considered a very safe way to reduce the submental volume.
This study aimed to identify the clinical and photographic changes observed among patients who received HIFU treatment and to evaluate the efficacy and safety of HIFU for submental fat reduction.
Thirty patients, aged from 25 to 60 years (20 females and 10 males), participated in a 4-week follow-up (n=30). High-intensity focused ultrasound treatment was performed on submental fat using two different focal depth transducers, 4.5 mm and 6.0 mm, with MP (Micro Pulsed) mode. We assessed the treatment effects using Vectra for volume measurement, CR-SMFRS (Clinician Report-Submental Fat Rating Scale) on a 5-point scale (0-4), SSRS (Subject Self-Rating Scale) on a 4-point scale (0-3), as well as monitoring weight and photography. Adverse events were evaluated using questionnaires.
A total of 30 patients were enrolled in this evaluation at the follow-up visit (4 weeks). The proportion of treatment patients satisfied with appearances and significant submental fat reduction was apparent when comparing the initial CR-SMFRS ratings to the final CR- SMFRS ratings. Initially, CR-SMFRS ratings were categorized as 10 mild, 10 moderate, 8 severe, and 2 extreme. After one session of treatment, the final ratings showed improved submental fat conditions, with 16 mild, 8 moderate, 5 severe, and 1 extreme. This change indicated a significant improvement, with a p-value of <0.000005. The SSRS showed an 82% improvement level, and most patients experienced immediate improvements. No significant side effects or adverse events were reported. Expected common side effects were noted but resolved within 2 weeks.
The HIFU treatment using the 4.5 and 6.0 mm focal depth transducers was safe and effective in reducing the submental fat based on the results.
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改善双下巴有多种治疗选择，如轮廓注射、线雕和双下巴吸脂术。然而，这些治疗的效果可能微乎其微或持续时间短。此外，这些治疗可能因反复穿透皮肤而导致瘢痕恶化，并可能引起长期不适。高强度聚焦超声（HIFU）是一种非侵入性超声提升治疗，无需手术即可改善双下巴，因此HIFU被认为是减少颏下容积的非常安全的方法。
本研究旨在确定接受HIFU治疗的患者的临床和影像学变化，并评估HIFU减少颏下脂肪的疗效和安全性。
30名年龄在25至60岁之间的患者（20名女性和10名男性）参与了为期4周的随访（n = 30）。使用两种不同焦深的换能器（4.5mm和6.0mm），采用MP（微脉冲）模式对颏下脂肪进行高强度聚焦超声治疗。我们使用Vectra进行体积测量、采用5分制（0 - 4）的CR - SMFRS（临床医生报告 - 颏下脂肪评级量表）、采用4分制（0 - 3）的SSRS（受试者自评量表）评估治疗效果，同时监测体重并拍照。使用问卷评估不良事件。
在随访就诊时（4周）共有30名患者参与此次评估。将初始CR - SMFRS评级与最终CR - SMFRS评级进行比较时，对外观满意且颏下脂肪显著减少的治疗患者比例明显可见。最初，CR - SMFRS评级分类为10例轻度、10例中度、8例重度和2例极重度。经过一次治疗后，最终评级显示颏下脂肪状况有所改善，16例轻度、8例中度、5例重度和1例极重度。这一变化表明有显著改善，p值<0.000005。SSRS显示改善水平为82%，大多数患者立即有改善。未报告明显的副作用或不良事件。观察到预期的常见副作用，但在2周内消退。
基于结果，使用4.5mm和6.0mm焦深换能器的HIFU治疗在减少颏下脂肪方面是安全有效的。
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