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Abstract #2920

Myocardial T1 mapping with second-based MOLLI scheme for reduced heartrate variation: A phantom validation study at 1.5T and 3.0T

Shuo Zhang1,2, Jennifer Ann Bryant2, Evelyn Shi Shi Quah3, Calvin Chin2,4, Derek Hausenloy2,4, Jouke Smink5, Ru San Tan2,4, Yeong Shyan Lee3, and Stuart A Cook2,4

1Philips, Singapore, Singapore, 2National Heart Centre Singapore, Singapore, Singapore, 3Tan Tock Seng Hospital, Singapore, Singapore, 4Duke-NUS Medical School, Singapore, Singapore, 5Philips, Best, Netherlands

Current standard myocardial T1 mapping is based on the modified Look-Locker inversion recovery (MOLLI) technique and single-shot readout per image acquisition. A second-based scheme has recently been proposed to mitigate the dependence of imaging times on heartrate and also to increase robustness in T1 estimation. Here we report a phantom-based study with ECG simulation comparing it with the original beat-based MOLLI acquisition scheme at both 1.5 and 3.0T. We demonstrate the advantage of this approach with reduced heartrate dependence and variation for an improved T1 quantification reliability.

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