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Abstract #1710

More Efficient SPGR 3D Abdominal Imaging Using an Interleaved Randomized Spoiler

zheng zhong1, Christopher M. Sandino2, Ali Syed1, John M. Pauly2, and Shreyas S. Vasanawala1
1Radiology, Stanford University, Stanford, CA, United States, 2Electrical Engineering, Stanford University, Stanford, CA, United States


3D SPGR is commonly used clinically for contrast-enhanced body imaging, but requires time for a gradient spoiler every TR. This consumes up to 40% of scan time, even for a non-cartesian trajectories with relatively long readouts, such as cones. Removing the spoiler can save time but causes severe artifacts. In this study, we propose a novel approach of applying interleaved, randomized spoilers to a motion-robust 3D-cones sequence. The feasibility of the approach to shorten acquisition time without introducing image artifacts was validated on both healthy subjects and patients.

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