Skeletal muscle function impairment can be associated to changes in both muscle volume and structural arrangement of fascicles/fibers within the muscle thereby leading to the reduction of muscle force production. Diffusion properties and 3D structural organization of muscle fibers were quantified from high-resolution diffusion tensor images recorded at ultra-high-field MRI (UHF-7T). These parameters were assessed regarding their intramuscular variability and sensitivity to sex difference. This application of UHF-7T might be of high interest for the assessment of muscular injuries in both athletes and patients with muscular disorders.
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