Abstract #0789

Simultaneous myocardial T1 and T2 mapping in 11 heartbeats using a radial sequence with inversion recovery and T2 preparation

Jiaxin Shao¹, Ziwu Zhou¹, Kim-Lien Nguyen^2,3, and Peng Hu^1,4

¹Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States, ²Department of Medicine, Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States, ³Division of Cardiology, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, United States, ⁴Biomedical Physics Inter-Departmental Graduate Program, University of California, Los Angeles, Los Angeles, CA, United States

Myocardial T1 and T2 mapping are promising cardiovascular magnetic resonance (CMR) techniques for quantitative tissue characterization and provide complementary information. Simultaneous T1 and T2 mapping strategies are attractive because of shorter scan time and the potential for inherently co-registered T1/T2 maps. By estimating T1 and T2 at the same time, the T2/T1 bias present in conventional T1 and T2 mapping sequences can be minimized and more accurate T1 and T2 estimation accomplished. In this work, we sought to develop a simultaneous T1 and T2 mapping technique that can achieve high accuracy and precision, without heart-rate dependence, and with high reproducibility comparable to the standard MOLLI and conventional T2 mapping techniques.

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