Changes to Muscle T<sub>2</sub> after Single-finger Exercise Measured with 0.2T MR Imaging
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- TAKAMORI Masayoshi
- Department of Regulatory Physiology, Dokkyo Medical University School of Medicine Department of Physical Therapy, Aoi Medical Academy
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- AKIYAMA Sumikazu
- Department of Regulatory Physiology, Dokkyo Medical University School of Medicine Department of Rehabilitation, University of Human Arts and Sciences, Faculty of Health Sciences
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- YOSHIDA Kazuya
- Department of Regulatory Physiology, Dokkyo Medical University School of Medicine Department of Rehabilitation, University of Human Arts and Sciences, Faculty of Health Sciences
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- IMAIZUMI-OHASHI Yoshie
- Department of Regulatory Physiology, Dokkyo Medical University School of Medicine
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- YOKOI-HAYAKAWA Mika
- Department of Regulatory Physiology, Dokkyo Medical University School of Medicine
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- YAMAZAKI Fumie
- Department of Regulatory Physiology, Dokkyo Medical University School of Medicine
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- OOTSUKA Hiroshi
- Department of Rehabilitation, University of Human Arts and Sciences, Faculty of Health Sciences
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- HAISHI Tomoyuki
- MRTechnology
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- SEO Yoshiteru
- Department of Regulatory Physiology, Dokkyo Medical University School of Medicine
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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.
Journal
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- Magnetic Resonance in Medical Sciences
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Magnetic Resonance in Medical Sciences 14 (4), 359-366, 2015
Japanese Society for Magnetic Resonance in Medicine