Magnetic Resonance in Medical Sciences
Changes to Muscle T2 after Single-finger Exercise Measured with 0.2T MR Imaging
Masayoshi TAKAMORISumikazu AKIYAMAKazuya YOSHIDAYoshie IMAIZUMI-OHASHIMika YOKOI-HAYAKAWAFumie YAMAZAKIHiroshi OOTSUKATomoyuki HAISHIYoshiteru SEO
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JOURNALS FREE ACCESS Advance online publication

Article ID: 2014-0090

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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 T2 values 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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© 2015 by Japanese Society for Magnetic Resonance in Medicine

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