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Abstract #2639

Free-Breathing Motion Insensitive T1-Weighted Spine MRI in Children Using a Radial Acquisition at 3 Tesla

Houchun Harry Hu1, Thomas Benkert2, Mark Smith1, Jerome Rusin1, Aaron McAllister1, Jeremy Jones1, Ramkumar Krishnamurthy1, and Kai Tobias Block1

1Radiology, Nationwide Children's Hospital, Columbus, OH, United States, 2Radiology, New York University Medical Center, New York, NY, United States

MRI methods that are insensitive to physiological motion are attractive in pediatric applications. In this work, we compare a 3D T1-weighted radial acquisition with conventional multi-slice TSE in post-contrast spine imaging at 3T in seven patients. Images were rated by three neuroradiologists. Radial data were perceived as more diagnostic than TSE and Cartesian TSE data were significantly more impacted by motion and pulsation. Qualitatively, radial images yielded improved spinal cord to CSF signal contrast and better conspicuity of nerve roots than TSE data. In evaluating secondary CSF tumor spread, radial spine MRI provides a confident "first-time-right" protocol than TSE scans.

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