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Abstract #4495

Prospective Motion Correction and Data Re-acquisition at 7 Tesla using E/M Trackers

W. Scott Hoge1,2, Onur Afacan2,3, Simon K. Warfield2,3, Amir Roth4, and Erez Nevo4
1Radiology, Brigham and Women's Hospital, Boston, MA, United States, 2Dept of Radiology, Harvard Medical School, Boston, MA, United States, 3Computational Radiology Laboratory, Boston Children's Hospital, Boston, MA, United States, 4Robin Medical, Inc., Baltimore, MD, United States


We evaluated the utility of electro-magnetic (E/M) based tracking to correct for motion at 7 Tesla. A 3D Turbo-FLASH sequence was modified to include prospective field-of-view (FOV) steering and track motion events. Custom software provided FOV updates to the TFL sequence from E/M sensor location measurements. Motion events recorded by the software indicated time-periods when acquired data was likely corrupted due to motion. Logic within the sequence re-acquired motion-corrupted k-space data segments to yield high-quality high-spatial-resolution images. Results demonstrate the viability of E/M tracking at 7T.

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