Neuromuscular Rehabilitation Research Center, Semnan University of Medical Sciences, Semnan, Iran.
Department of Physical Therapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Musculoskelet Sci Pract. 2017 Dec;32:57-63. doi: 10.1016/j.msksp.2017.08.009. Epub 2017 Aug 24.
Changes in the orientation of ultrasound (US) transducer relative to the body surface during dynamic standing tests can affect US measurements.
The purpose of the study was to evaluate ultrasound imaging transducer motion while measuring the lateral abdominal muscle thickness during standing tasks with and without using transducer fixator (TF).
Cross-sectional experimental study.
A digital optical motion analysis system was used to assess the motions of US transducer during double-leg stance in different levels of platform stability of Biodex Balance System (BBS) (static, levels 6 and 3) with and without using TF in 45 healthy individuals. In addition, lateral abdominal muscle thickness was evaluated by US imaging.
The results indicated that the amount of angular and linear transducer motions during static and dynamic standing tasks significantly decreased by the use of TF as compared to the conditions without TF (P < 0.001, effect size> 0.84).
TF can significantly control US transducer motions within acceptable threshold limits during standing postural task. This may improve the clinical application of US imaging.
在动态站立测试中，超声（US）换能器相对于体表的方向的变化会影响 US 测量。
本研究的目的是评估在使用和不使用换能器固定器（TF）的情况下，测量站立任务中侧腹肌厚度时，超声成像换能器的运动。
横断面实验研究。
使用数字光学运动分析系统评估 45 名健康个体在 Biodex Balance System（BBS）不同平台稳定性水平（静态、6 级和 3 级）下双腿站立时 US 换能器的运动情况，同时使用和不使用 TF。此外，通过 US 成像评估侧腹肌厚度。
结果表明，与不使用 TF 相比，使用 TF 可显著减少静态和动态站立任务期间角度和线性换能器运动的幅度（P<0.001，效应量>0.84）。
TF 可在站立姿势任务期间显著控制 US 换能器运动在可接受的阈值范围内。这可能会改善 US 成像的临床应用。
