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Abstract #1951

Evaluation of markerless prospective motion correction for neuroanatomical MRI

Zakaria Zariry1,2, Robert Frost3,4, Franck Lamberton2,5, Thomas Troalen6, Nathalie Richard1,2, Andre van der Kouwe3,4, and Bassem Hiba1,2
1Institute of Cognitive Neuroscience Marc Jeannerod, CNRS / UMR 5229, BRON, France, Metropolitan, 2Université Claude Bernard - Lyon 1, Villeurbanne, France, Metropolitan, 3Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, 4Department of Radiology, Harvard Medical School, Boston, MA, United States, 5Cermep, CNRS / UAR 3453, Lyon, France, Metropolitan, 6Siemens Healthcare SAS, Saint-Denis, France, Metropolitan


Head-motion is a main cause of artifacts in MRI. The performance of a markerless optical system, which records the subject's face, estimates head-motion, and allows real-time repositioning of the FOV, is evaluated for neuroanatomical MRI. Sets of T1W/T2W-images were collected from 2 subjects instructed to perform different head-motion protocols during the acquisitions. The System performance is evaluated by comparing images with/without motion-correction. The optical system ensures good corrections of head-motions. However, the correction quality depends on the amplitude of the movement, its location in k-space and its nature. Residual effects of large amplitudes/amounts movements may persist on corrected images.

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