Kinesiology & Health Science Department, Utah State University, Logan, UT, USA.
Division of Physical Medicine & Rehabilitation, University of Utah, Salt Lake City, UT, USA.
Ultrasound Med Biol. 2020 Apr;46(4):944-951. doi: 10.1016/j.ultrasmedbio.2019.11.018. Epub 2020 Jan 14.
With lower-cost devices and technologic advancements, ultrasound has been undergoing a resurgence as a method to measure subcutaneous adipose tissue. We aimed to determine whether a low-cost, 2.5-MHz amplitude (A-mode) ultrasound, designed specifically for body composition assessment, could produce subcutaneous fat thickness measurements comparable to an expensive, 12-MHz brightness (B-mode) device. Fat thickness was measured on 40 participants (20 female, 20 male; 29.7 ± 11.1 y of age; body mass index 24.9 ± 4.5 kg/m) at 7 sites (chest, subscapula, mid-axilla, triceps, abdomen, suprailiac and thigh) with both devices. Intraclass correlations exceeded 0.75 at all measurement sites. Mean differences in fat thickness were not significantly different (p > 0.05) and within ± 1.0 mm. Variability between devices was greatest at the abdomen, the site with the greatest thickness. The low-cost, low-resolution A-mode ultrasound provides subcutaneous fat thickness measurements similar to the more expensive, high-resolution B-mode ultrasound.
随着成本更低的设备和技术的进步，超声技术作为一种测量皮下脂肪组织的方法正在重新兴起。我们旨在确定一种专为身体成分评估而设计的低成本、2.5MHz 幅度（A 模式）超声仪是否可以产生与昂贵的 12MHz 亮度（B 模式）设备相当的皮下脂肪厚度测量值。在 40 名参与者（20 名女性，20 名男性；年龄 29.7 ± 11.1 岁；BMI 24.9 ± 4.5kg/m）的 7 个部位（胸部、肩胛下、腋窝中部、肱三头肌、腹部、髂前上棘和大腿）用两种设备测量脂肪厚度。在所有测量部位，组内相关系数均超过 0.75。脂肪厚度的平均差异无统计学意义（p＞0.05），且在±1.0mm 以内。设备间的变异性在腹部最大，即厚度最大的部位。低成本、低分辨率的 A 模式超声可以提供与更昂贵、高分辨率的 B 模式超声相似的皮下脂肪厚度测量值。
