Skeletal muscle coutraction : visualization with Ultra-fast tagging MR2

骨骼肌收缩：使用超快速标记 MR2 进行可视化

• 批准号: 07807083
• 负责人: NIITSU Mamoru
• 金额: $ 0.51万
• 依托单位: Institute of Clinical Medicine University of Tsukuba
• 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-07807083/
• 关键词: MRI; tagging; skeletal muscle; isotonic contraction; muscle contraction

Skeletal Muscle Contraction : Visualization with Ultra-fast Tagging MRIThis study demonstrates quantitative visualization of the skeletal muscle contraction using a newly-developed tagging MRI with acquisition times of less than 2 seconds. The method is based on T1-weighted magnetization-prepared gradient echo imaging. Combining spatially selective RF tagging pulses, this sequence allows labeling and tracking of muscular action without the need for gated acquisition. After phantom examinations, human volunteer studies were performed with intentional contractions of various muscles at the lower-extremity. Among morphological variations, especially for the quadriceps muscle, contractile fashion of muscle "bellies" and contraction forces via fascia and tendon were demonstrated as displacement and alteration of the bright tagging stripes.

本研究展示了使用新开发的标记MRI对骨骼肌收缩的定量可视化，采集时间不到2秒。该方法基于t1加权磁化制备梯度回波成像。结合空间选择性射频标记脉冲，该序列允许标记和跟踪肌肉动作，而不需要门控采集。在幻肢检查之后，人类志愿者的研究在下肢各种肌肉的有意识收缩中进行。在形态学变化中，尤其是股四头肌，肌肉“腹部”的收缩方式和通过筋膜和肌腱的收缩力表现为明亮标记条纹的移位和改变。

项目成果

Echio J et al: "Two Componento of thigh muscle contraction changes as muscular load increased" ISMRM. 4. 861 (1996)

Echio J 等人：“大腿肌肉收缩的两个组成部分随着肌肉负荷的增加而变化”ISRMM。

日置 繁 他: "膝伸展運動時の大腿四頭筋内収縮様式の解析" 臨床バイオメカニクス. 9. 140 (1996)

Shigeru Hioki 等：“膝关节伸展运动时股四头肌的内部收缩模式分析”《临床生物力学》9. 140 (1996)。

Echigo J. et.al: "Two components of thigh muscle contraction changes as muscular load increased" Internal Society of Magnetic Resomnu in Medkine. 4. 861 (1996)

Echigo J. 等人：“随着肌肉负荷的增加，大腿肌肉收缩的两个组成部分发生变化”，Medical Resomnu 内部协会，Medkine 中。

中橋一誠: "MRI(fagging-snapshot法)による膜伸展時の大腿四頭筋の筋移動の解析" 体力科学. 44. 817 (1995)

Issei Nakahashi：“使用 MRI（fagging-snapshot 方法）分析膜伸展过程中股四头肌的肌肉运动”《体能科学》44. 817 (1995)。

Echigo J. et.al: "Two components of fhigh muscle contraction changes as muscular load increused" Internal Society of Magnetic Resomae in Medicine. 4. 861- (1996)

Echigo J. 等人：“随着肌肉负荷的增加，高频肌肉收缩的两个组成部分发生变化”医学磁学内部学会。