Identification of muscle activities involved in hyoid bone movement during swallowing using computer simulation
Identification of muscle activities involved in hyoid bone movement during swallowing using computer simulation
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DOI：
10.1080/21681163.2023.2189486
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发表时间：
2023-03
期刊：
影响因子：
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通讯作者：
Takahiro Kikuchi;Y. Michiwaki;H. Azegami
中科院分区：
文献类型：
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作者：
Takahiro Kikuchi;Y. Michiwaki;H. Azegami
摘要吞咽相关肌肉的活动和器官的运动很难明确。为了表示肌肉活动和器官运动之间的关系，需要反映肌肉收缩的数值模拟器。然而，没有连续体器官模型可以识别和反映肌肉活动。在这项研究中，一种新的方法，获得的时间变化的所有肌肉参与舌骨位移的活动。一个器官模型的基础上开发的四维计算机断层扫描（4DCT）图像采集使用320列区域探测器CT，和器官的运动进行了分析，使用粒子的方法。为了识别肌肉活动，考虑舌骨的速度和位置的误差，定义并计算评价函数，并且使用梯度下降来计算使评价函数最小化的肌肉活动。结果表明，仿真模型所反映的舌骨运动与4DCT图像所反映的客观运动具有较好的一致性。通过与肌电图测量的文献和使用其他方法的模拟结果进行比较，讨论了所确定的肌肉活动。建议的连续体器官模型与肌肉被认为能够澄清肌肉活动和器官运动。
ABSTRACT It is difficult to clarify the activity of swallowing-related muscles and the movement of organs. To represent the relationship between muscle activity and organ movement, a numerical simulator that reflects muscle contraction is necessary. However, no continuum organ models can identify and reflect muscle activity. In this study, a novel method was developed for obtaining the time change in the activities of all muscles involved in hyoid excursion. An organ model was developed based on four-dimensional computed tomography (4DCT) images acquired using a 320-column area detector CT, and the organ movement was analysed using a particle method. To identify the muscle activity, an evaluation function was defined and calculated considering the errors of velocities and positions of the hyoid bone, and the muscle activities to minimise the evaluation function were calculated using gradient descent. The results showed that the hyoid movement represented by the simulation model and the objective movement obtained from 4DCT images were in good agreement. The identified muscle activities were discussed through a comparison with the literature on electromyography measurements and the results of simulations using other methods. The proposed continuum organ model with muscles was considered able to clarify both muscle activity and organ movement.