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Abstract #3888

Highly Accelerated Cine DENSE MRI with k-t SPARSE SENSE

Elwin Bassett 1 , Ricardo Otazo 2 , Li Feng 2 , Ganesh Adluru 3 , Edward DiBella 3 , and Daniel Kim 3

1 Physics, University of Utah, Salt Lake City, Utah, United States, 2 Radiology, New York University, New York, United States, 3 UCAIR, Radiology, University of Utah, Salt Lake City, Utah, United States

Displacement encoding with stimulated echoes (DENSE) MRI is a promising method to quantify myocardial strain. While 2-fold accelerated cine DENSE MRI using TSENSE has been validated, its breath-hold duration (12 heart-beats) may still be too long for critically ill patients. We have retrospectively undersampled full DENSE data sets in two volunteers at acceleration factors of 4 and 8 and reconstructed them using k-t SPARSE SENSE parameters. Compared with circumferential shortening strain from the fully sampled data sets, strain from 4-fold and 8-fold undersampled data sets agreed well, suggesting feasibility of highly-accelerated cine DENSE MRI with k-t SPARSE-SENSE.

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