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Abstract #0466

Comparison of Prospective and Retrospective Motion Correction for 3D Structural Brain MRI

Jakob Slipsager1,2,3,4, Stefan Glimberg4, Liselotte Højgaard2, Rasmus Paulsen1, Andre van der Kouwe3,5, Oline Olesen1,4, and Robert Frost3,5
1DTU Compute, Technical University of Denmark, Kgs. Lyngby, Denmark, 2Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark, 3Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, 4TracInnovations, Ballerup, Denmark, 5Department of Radiology, Harvard Medical School, Boston, MA, United States

This work compares prospective and retrospective motion correction based on their capabilities to remove motion artifacts from 3D-encoded MPRAGE scans. Motion artifacts in clinical and research brain MRI are a major concern and the outcome of this problem includes repeated scans and the need for patient sedation or anesthesia, causing increased study time and cost. The prospective and retrospective correction approaches substantially improve the image quality of in-vivo scans for similar motion patterns. Prospective motion correction resulted in higher image quality than retrospective correction for larger discrete movements, and for periodic motion.

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