Shek Sam, Yu Carol, Yeung C K, Kono Taro, Chan Henry H
Division of Dermatology, Department of Medicine, University of Hong Kong, Hong Kong SAR, China.
Lasers Surg Med. 2009 Dec;41(10):751-9. doi: 10.1002/lsm.20875.
Previous studies demonstrated that multiple treatments using focused ultrasound can be effective as an non-invasive method for reducing unwanted localized fat deposits. The objective of the study is to investigate the safety and efficacy of this focused ultrasound device in body contouring in Asians.
Fifty-three (51 females and 2 males) patients were enrolled into the study. Subjects had up to three treatment sessions with approximately 1-month interval in between treatment. Efficacy was assessed by changes in abdominal circumference, ultrasound fat thickness, and caliper fat thickness. Weight change was monitored to distinguish weight loss induced changes in these measurements. Patient questionnaire was completed after each treatment. The level of pain or discomfort, improvement in body contour and overall satisfaction were graded with a score of 1-5 (1 being the least). Any adverse effects such as erythema, pain during treatment or blistering were recorded.
The overall satisfaction amongst subjects was poor. Objective measurements by ultrasound, abdominal circumference, and caliper did not show significant difference after treatment. There is a negative correlation between the abdominal fat thickness and number of shots per treatment session.
Focused ultrasound is not effective for non-invasive body contouring among Southern Asians as compared with Caucasian. Such observation is likely due to smaller body figures. Design modifications can overcome this problem and in doing so, improve clinical outcome.
先前的研究表明，使用聚焦超声进行多次治疗作为一种减少不必要的局部脂肪堆积的非侵入性方法可能是有效的。本研究的目的是调查这种聚焦超声设备在亚洲人身体塑形中的安全性和有效性。
53名患者（51名女性和2名男性）被纳入研究。受试者接受多达三次治疗，每次治疗间隔约1个月。通过腹围、超声脂肪厚度和卡尺脂肪厚度的变化评估疗效。监测体重变化以区分体重减轻引起的这些测量值的变化。每次治疗后完成患者问卷。对疼痛或不适程度、身体轮廓改善情况和总体满意度进行评分，1-5分（1分为最低）。记录任何不良反应，如红斑、治疗期间疼痛或水泡。
受试者的总体满意度较差。超声、腹围和卡尺的客观测量在治疗后没有显示出显著差异。腹部脂肪厚度与每次治疗的发射次数之间存在负相关。
与白种人相比，聚焦超声在南亚人中进行非侵入性身体塑形无效。这种观察结果可能是由于身材较小。设计改进可以克服这个问题，从而改善临床结果。
