Abstract #4598
Multi-Continent Analysis of Geometric Distortion in Low-Field MRI
Stephen E. Ogier1,2, Annabel Sorby-Adams3, Kalina Jordanova1, Andrew M. Dienstfrey4, Zydrunas Gimbutas4, Jennifer Guo3, John Kirsch5, Steven Schiff6, Ronald Mulondo7, Johnes Obungoloch8, Megan E Poorman9, John Pitts9, W. Taylor Kimberly3, and Kathryn E. Keenan1
1Magnetic Imaging Group, National Institute of Standards and Technology, Boulder, CO, United States, 2Department of Physics, University of Colorado Boulder, Boulder, CO, United States, 3Department of Neurology and the Center for Genomic Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States, 4Mathematical Analysis and Modeling Group, National Institute of Standards and Technology, Boulder, CO, United States, 5A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, 6Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, United States, 7CURE Children's Hospital of Uganda, Mbale, Uganda, 8Faculty of Applied Sciences and Technology, Mbarara University of Science and Technology, Mbarara, Uganda, 9Hyperfine, Inc., Guilford, CT, United States
Synopsis
Keywords: Artifacts, Low-Field MRIThe assessment of brain morphology requires geometric accuracy, and the monitoring of pathologies like dementia requires geometric stability over time and between systems. We aim to assess the geometric accuracy and stability of a head-only 64 mT system by imaging the cylindrical phantom provided by the manufacturer, positioned with a 3D-printed holder for stability, and analyzing the geometric fidelity of the images produced by a variety of product sequences. The initial assessment examines the perimeter of the phantom and how it varies along the S-I direction.
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