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Abstract #2767

Cardiac T1 Mapping Using True Hybrid Inversion and Saturation Recovery

Glenn S. Slavin1, Anne Menini2, Haonan Wang3, and Anja C.S. Brau4

1GE Healthcare, Bethesda, MD, United States, 2GE Global Research, Munich, Germany, 3GE Healthcare, Waukesha, WI, United States, 4GE Healthcare, Menlo Park, CA, United States

Despite limited accuracy, MOLLI remains popular for T1 mapping due to high precision and visual quality of the maps. This is due primarily to the large dynamic range afforded by the inversion-recovery (IR) acquisition. Methods using saturation-recovery (SR) have better T1 accuracy but have relatively poor precision compared with MOLLI. This work presents a true hybrid IR/SR acquisition that targets the optimal regions of both the IR and SR relaxation curves, employs a novel method for maximizing dynamic range, and uses an improved sampling strategy. The proposed hybrid method combines the accuracy of single-point SR with the precision of IR.

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