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Abstract #3971

Fast Brain MR Elastography Using a Simultaneous Multislice EPI Acquisition on a Compact 3T Scanner

Yi Sui1, Ziying Yin1, Phillip J. Rossman1, Matthew C. Murphy1, Joshua D. Trzasko1, Jonathan M. Scott1, Kevin J. Glaser1, Kiaran P. McGee1, Matt A. Bernstein1, Richard L. Ehman1, and John Huston III1

1Radiology, Mayo Clinic, Rochester, MN, United States

In this study, we developed a fast MR elastography (MRE) pulse sequence using a simultaneous multislice (SMS)-EPI acquisition. The feasibility of SMS-EPI-MRE was demonstrated on a compact 3T scanner in a pilot volunteer study using 2 different head-coil arrays. Our results show that the overall scan time for 60-Hz 3-mm isotropic and 80-Hz 2-mm isotropic whole-brain MRE acquisitions were greatly reduced to 1-2 minutes (depending on the multiband acceleration) and 3:21 minutes, respectively. The wave images and stiffness maps from the SMS acquisitions were comparable to conventional MRE results.

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