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Abstract #5179

Usefulness of non-contrast perfusion using arterial spin labeling (ASL) for the differential diagnosis of shoulder pain

Katsumi Nakamura1,2, Fumihide Arakami3, Tomoko Nishi3, Kenichi Inoue2, Akiyoshi Yamamoto4, Asaka Aso5, and Mitsue Miyazaki6

1Radiology, Tobata General Hospital, Kitakyushu, Japan, 2Radiology, Sakura Clinic, Kitakyushu, Japan, 3Radiology, Mihagino Hospital, Kitakyushu, Japan, 4Radiology, Tobata Kyoritsu Hospital, Kitakyushu, Japan, 5Toshiba Medical Systems, Kasuga, Japan, 6Radiology, UC San Diego, La Jolla, CA, United States

We evaluated the usefulness of non-contrast perfusion obtained using arterial spin labeling (ASL) for the assessment and the differential diagnosis of shoulder disorders. Twenty consecutive patients were divided into 4 groups. Group 1 (partial tear or less) had no enhancement at the subacromional region; whereas, group 2 (full thickness tear of rotator cuff) showed significant enhancement due to bursitis. Group 3 (calcific tendinitis) and group 4 (osteoarthritis) also showed well enhancement. ASL perfusion could provide the additional physiological information to the morphological routine shoulder MRI without use of contrast materials, which is valuable for the management of shoulder disorders.

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