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Abstract #1164

Muscle Functional MRI of Exercise-Induced Rotator Cuff

Noriyuki Tawara1, Osamu Nitta2, Hironobu Kuruma2, Mamoru Niitsu3, Naoyuki Tamura4, Hideyuki Takahashi4, Atsuto Hoshikawa1, Kakuko Nakamura1, Toru Okuwaki1, Akiyoshi Itoh5

1Department of Sports Medicine, Japan Institute of Sports Sciences, Tokyo, Japan; 2Department of Physical Therapy, Faculty of Health Sciences, Tokyo Metropolitan University, Tokyo, Japan; 3Department of Radiology, Saitama Medical University, Saitama, Japan; 4Department of Sports Sciences, Japan Institute of Sports Sciences, Tokyo, Japan; 5Graduate Course of Computer Sciences, College of Sciences & Technology, Nihon University, Chiba, Japan

Strengthening of the rotator cuff muscles in one of the most integral parts of a rehabilitation program for athletes with shoulder problems who are involved in throwing sports. MRI can evaluate muscle activity; T2 of exercised muscle increases compared to that of rested muscle. However, it is difficult for efficient use as the evaluation by the rehabilitation. This study evaluated the detectability of the rotator cuffsf muscle activity induced by acute exercises. In this study, we presented the detectability of rotator cuffsf activities. T2 calculating from SE-EPI images indicated high detectability for muscle activity in the region of shoulder.