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Abstract #2681

Evaluation of Kinematics and Image Quality of Thoracic Outlet during Humeral Elevation in Normal Volunteers Using 3D-MRI with Compressed Sensing

Manabu Arai1,2, Taiki Nozaki2, Saya Horiuchi2, Takahiro Sato2, Miki Hirano2, Shigekazu Funada2, Takeshi Hara3, Atsushi Tasaki4, Nobuto Kitamura4, Masahiro Jinzaki1, and Yasuyuki Kurihara2
1Department of Radiology, Keio University School of Medicine, Tokyo, Japan, 2Department of Radiology, St. Luke's International Hospital, Tokyo, Japan, 3Department of Intelligent Image Information, Gifu University School of Medicine, Gifu, Japan, 4Department of Orthopaedic Surgery, St. Luke's International Hospital, Tokyo, Japan

We performed 3D-MR imaging with compressed sensing on the thoracic outlet of 23 normal volunteers, comparing it with conventional 2D-MR imaging. The image quality score of 3D-PDWI with compressed sensing was significantly lower than that of 2D-PDWI. However, no significant difference in the image quality score of MRA with compressed sensing due to arm position was demonstrated. Subclavian arterial stenosis during humeral elevation was shown in 30.4% of asymptomatic subjects without gender predominance. 3D-MR imaging using compressed sensing enables us to evaluate the kinematics of the thoracic outlet, and may contribute to the diagnosis of TOS in clinical settings.

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