Annu Int Conf IEEE Eng Med Biol Soc. 2022 Jul;2022:3899-3902. doi: 10.1109/EMBC48229.2022.9871352.
Skeletal muscle volume has been mainly investigated under static conditions, i.e. isometric contractions. The aim of our study is to use ultrasound imaging to determine muscle deformation during movement. We used a custom-designed scanning rig to obtain 3D ultrasound images of a subject moving the foot from plantarflexion to dorsiflexion at constant velocity. Using motion capture, we computed the respective angle of the ankle for each frame and collected them in bins based on the measured angle (rounded on the next normal number). For each degree, we used Stradwin for the 3D reconstruction of the respective volume. We found increasing cross-sectional areas for increasing dorsiflexion angles. The proposed method is a promising approach for determining muscle volume during movement. Future studies aim at collecting more data to compute muscle volume and length during contraction and compare the results to isometric measurements.
骨骼肌体积主要在静态条件下进行研究，即等长收缩。我们的研究目的是使用超声成像来确定运动过程中的肌肉变形。我们使用定制的扫描装置获得受试者以恒定速度从跖屈到背屈移动足部的 3D 超声图像。使用运动捕捉，我们为每个帧计算了踝关节的相应角度，并根据测量的角度将它们收集到各个 bin 中（舍入到下一个标准数）。对于每个度数，我们使用 Stradwin 对相应体积进行 3D 重建。我们发现，随着背屈角度的增加，横截面积也随之增加。该方法是一种很有前途的方法，可以在运动过程中确定肌肉体积。未来的研究旨在收集更多数据，计算收缩过程中的肌肉体积和长度，并将结果与等长测量进行比较。
