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Abstract #4252

Deformation-Induced Damage in Rat Skeletal Muscle: role of the vascular system

Jules Nelissen 1,2 , Willeke Traa 3 , Kevin Moerman 4 , Cees Oomens 3 , Aart Nederveen 4 , Klaas Nicolay 1 , and Gustav Strijkers 1,2

1 Biomedical NMR, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands, 2 Biomedical Engineering and Physics, Academic Medical Center, Amsterdam, Netherlands, 3 Soft Tissue Biomechanics and Engineering, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands, 4 Department of Radiology, Academic Medical Center, Amsterdam, Netherlands

To investigate the response of the vascular system on sustained mechanical loading of skeletal muscle and subsequent skeletal muscle damage after end of period of deformation a study was performed in a rat model for skeletal muscle damage. During application of sustained mechanical loading to skeletal muscle and subsequent collapse of main supplying artery the body tries to keep up blood supply. After end of indentation a hyperemic response is observed. In case of combination of skeletal muscle deformation and occlusion of main supplying vessel, more edema formation is observed, which was further confirmed by T2 ROI analysis. T2 enhancement due to skeletal muscle damage appears highly structured and matches the peri, and endomysium organization of skeletal muscle.

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