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Abstract #3566

Factorized Spatiotemporal Convolutions for Simultaneous Multislice Magnetic Resonance Fingerprinting

Lan Lu1, Yilin Liu2, Amy Zhou1, Pew-Thian Yap3, and Yong Chen4,5
1Radiation Oncology, Cleveland Clinic, Cleveland, OH, United States, 2Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, 3Radiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, 4Radiology, Case Western Reserve University, Cleveland, OH, United States, 5Radiology, University Hospitals Cleveland Medical Center, Cleveland, OH, United States

Synopsis

Keywords: MR Fingerprinting, Quantitative Imaging

Motivation: Quantitative MR imaging with volumetric coverage is relatively slow, which hinders its clinical evaluation.

Goal(s): To leverage simultaneous multislice MR Fingerprinting (SMSMRF) and deep learning to achieve high multi-band factors for rapid quantitative imaging.

Approach: We introduced a Spatio-Temporal UNet (STUN) method to exploit both spatial and temporal correlations of signals in SMSMRF to largely accelerate data acquisition.

Results: High multi-band factors (3 and 4) with an additional 4x acceleration along the temporal dimension were achieved, providing rapid data sampling of 1.5~2 sec per slice for quantitative brain imaging.

Impact: The developed SMSMRF method holds great potential to accelerate quantitative imaging for challenging subjects, f.g. pediatric patients.

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