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Abstract #2506

Motion-Free MR Imaging of Brachial Plexus using the PROPELLER technique combined with Low-Refocus Flip Angle FSE

Kojiro Ono1,2, Yasuhiro Oikawa3, Takayuki Sakai4, Hirofumi Watanabe1, Akira Shirayama1, Takumi Okubo5, and Atsushi Senoo2

1Chiba Children's Hospital, Chiba, Japan, 2Tokyo Metropolitan University, Tokyo, Japan, 3Orthopaedic Surgery, Chiba Children's Hospital, Chiba, Japan, 4Eastern Chiba Medical Center, Chiba, Japan, 5Chiba Cancer Center, Chiba, Japan

The STIR Low-RFA PROPELLER method is a combination of STIR (Short-TI Inversion Recovery) suppressing fat signal homogenously and low refocus flip angle (Low-RFA) PROPELLER for flow signal reduction. Furthermore, the PROPELLER is able to reduce ghost generated by flow and motion, and to maintain high resolution by averaging of k-space. Consequently, the STIR Low-RFA PROPELLER method will be expected to produce clear brachial plexus imaging which is not affected by motion. In this study, we demonstrate that this new scheme (STIR Low-RFA PROPELLER) is superior to the conventional method (T2 weighted IDEAL) in the depiction of brachial plexus.

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