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Abstract #4656

MPRAGE Using EPI Navigators for Prospective Motion Correction

Matthew Dylan Tisdall1,2, Aaron Hess3, Andre van der Kouwe1,2

1Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA; 2Radiology, Harvard Medical School, Brookline, MA, USA; 3Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa

We present initial results from a novel method for real-time motion correction in MPRAGE imaging. We use high-speed, 32^3 EPI volumes as navigators, interspersed in the dead time of the MPRAGE sequence. We estimate rigid body motion from the EPI volumes and correct the MPRAGE's acquisition location before each readout block.