Abstract #5367

Perturbation of calf-muscle stiffness with graded plantar flexions as measured by magnetic resonance elastography

Jialin Wang¹, Xin Mu², Mingyan Wu¹, Yanbin Li¹, Huahui Xu^3,4, Xiaoli Gu^3,4, and Jeff L. Zhang²

¹Central Research Institute, United Imaging Healthcare, Shanghai, China, ²School of Biomedical Engineering, ShanghaiTech University, Shanghai, China, ³Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China, ⁴Department of Radiology, Shanghai Guanghua Hospital of Integrative Medicine, Shanghai, China

Synopsis

Keywords: Skeletal, Elastography

Using magnetic resonance elastography (MRE), we investigated the potential changes in the stiffness of calf muscle with plantar flexion. Significant decreases in shear modulus were found when exercise was applied in a progressive way. Such decrease was possibly due to the increase muscle hyperemia in exercise, which was partially verified by increased T2-weighted signals in the same study. In conclusion, MRE is a promising method for measuring mechanical viscoelastic properties of skeletal muscles and thus for assessing muscle function or performance.

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