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Updated: Apr 15, 2026

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
Published on: December 18, 2016
Changes to Muscle T₂after Single-finger Exercise Measured with 0.2T MR Imaging
Masayoshi Takamori1, Sumikazu Akiyama, Kazuya Yoshida
1Department of Regulatory Physiology, Dokkyo Medical University School of Medicine.
Abstract:
We constructed an arm holder for muscle exercise from a forearm-shaped plastic shell and magnetic resonance (MR) imaging position markers and determined the echo time (39 ms) for T₂-weighted spin-echo MR imaging from T₂values of the exercised (50 ms) and resting (32 ms) muscle at 0.2 tesla. The smallest detectable muscle was the extensor digiti minimi muscle (cross-sectional area 25 mm²). This combination could be useful to monitor finger exercise in patients undergoing physical therapy.
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