受力腓肠肌剪切波速度的超声检测  

Ultrasonic detection in shear wave velocity of gastrocnemius muscle under stress

作　　者：刘瑞雪 吕倩 张雪晴 张少哲 郭建中[1] LIU Ruixue;LYU Qian;ZHANG Xueqing;ZHANG Shaozhe;GUO Jianzhong(College of Physics and Information Technology,Shaanxi Normal University,Shaanxi Key Laboratory of Ultrasound Science,Xi’an 710109,China)

机构地区：[1]陕西师范大学物理学与信息技术学院,陕西省超声学重点实验室,西安710109

出　　处：《应用声学》2021年第1期74-79,共6页Journal of Applied Acoustics

基　　金：国家自然科学基金项目(11727813,11574192);陕西省自然科学基础研究计划青年项目(2019JQ-669);中央高校基本科研业务费专项资金项目(GK201903018)。

摘　　要：肌肉组织受力时的弹性特征变化,是其功能特性、健康状态的重要评估参量。该文利用在离体肌肉组织表面施加低频振动引起组织发生形变,在组织内部产生剪切波的方法,经过快速超声成像,通过剪切波图像估计剪切波的传播速度。研究结果表明顺肌纤维方向传播的剪切波速度快于垂直肌纤维方向传播的剪切波速度,剪切波的传播速度随受力的增加而变大,且顺肌纤维方向传播的剪切波速度与受力大小呈正相关。探讨肌纤维不同方向上的剪切波速度,为肌肉组织的病变及疲劳状态的检测和评估提供了参考。Changes in elastic characteristics of loaded tissue are important assessment parameters for its functional properties and health status.In this paper,we applied low frequency vibration to the surface of muscle tissue to deform it and generated shear waves inside,and then,we performed rapid ultrasonic imaging and estimated the propagation velocity of the shear wave based on images.The results show that the shear wave velocity propagated in the direction of muscle fibers was faster than that in the vertical direction,and increased with the increase of load,moreover,the shear wave velocity propagated in the direction of the muscle fibers was positively correlated with the load.The shear wave velocity in different directions of muscle fiber provides a reference for the detection and evaluation of muscle lesion and fatigue state.

关 键 词：低频振动 超声成像 剪切波速度 

分 类 号：O429[理学—声学]