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Dynamic Analysis of the Muscle Movement with MRI

MRI 肌肉运动动态分析

基本信息

批准号：
07671567
负责人：
FUKUBAYASHI Toru
金额：
$ 1.41万
依托单位：
The University of Tokyo (1996)University of Tsukuba (1995)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07671567/
关键词：
MRI in vivo intramuscular movement hamstrings quadriceps femoris gastrocnemius 大腿屈筋筋肉移動

项目摘要

The purpose of this study was to evaluate intramuscular movement of quadriceps femoris and hamstrings with a new magnetic resonance imaging (MRI) method. Tagging Snapshot technique can label multiple high intensity tagged bands within the musculature by applying selective 180ﾟ pulses in a plane orthogonal to the image section. Motion within the interval between the tagging and the image acquisition are demonstrated as displaced and distorted tagging bands. Ten legs of ten healthy volunteers, seven males and three females, were investigated. To measure the motion of quadriceps femoris, subjects lied in supine position and extended their knees from 45 to 30 degrees and from 15 to 0 degrees, and for hamstrings, lied in prone position and flexed their knees from 15 to 0 degrees. And for soleus, gastrocnemius and tibiaris anterior muscle, subjects lied in supine position, and performed dorsiflextion and plantar-flexion of their ankle. Sagittal and coronal sections with Tagging Snapshot method were obtained. As a results, at any portion of quadriceps femoris, proximal movement was observed, and the movement at distal portion was larger than proximal ones. As hamstrings, at any portion of short head of biceps femoris, semitendinosus and gracilis, proximal movement was observed but at distal portion of long head of biceps femoris and semimembranosus proximal and distal movement was observed at a same time. As gastrocnemius, at any portion of three components moved proximal, and no difference were observed between amount of their movement.

本研究旨在利用一种新的磁共振成像（MRI）方法评价股四头肌和腘绳肌的肌内运动。标记快照技术可以通过在与图像截面正交的平面中施加选择性的180 kHz脉冲来标记肌肉组织内的多个高强度标记带。标记和图像采集之间的间隔内的运动被证明为移位和扭曲的标记带。对10名健康志愿者（7男3女）的10条腿进行了研究。为了测量股四头肌的运动，受试者躺在仰卧位，并将膝盖从45 °延伸到30 °和从15 °延伸到0 °，并且对于腘绳肌，躺在俯卧位，并将膝盖从15 °弯曲到0 °。比目鱼肌、腓肠肌和胫前肌则取仰卧位，踝关节背屈和跖屈。采用Tagging Snapshot法制作冠状面和冠状面。结果表明，股四头肌的任何部位都有近端运动，且远端运动大于近端运动。股二头肌、半腱肌和股薄肌短头的任何部位均观察到近端运动，而股二头肌和半膜肌长头的远端部位同时观察到近端和远端运动。在腓肠肌中，三个组件的任何部分都向近端移动，并且它们的移动量之间没有观察到差异。