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Abstract #2622

Myocardial T 1 Mapping Comparing SMART 1 Map and MOLLI: Clinical Experience at 3T

Erik P. Skulborstad 1 , Zachary S. Borden 1 , Karl K. Vigen 1 , Glenn S. Slavin 2 , Kang Wang 3 , Mark L. Schiebler 1 , Scott K. Nagle 1 , Scott B. Reeder 1,4 , Thomas M. Grist 1,4 , and Christopher J. Francois 1

1 Department of Radiology, University of Wisconsin-Madison, Madison, WI, United States, 2 GE Healthcare, Bethesda, MD, United States, 3 Global MR Applications and Workflow, GE Healthcare, Madison, WI, United States, 4 Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, United States

MOdified Look Locker Inversion recovery (MOLLI) is a commonly employed sequence for measuring cardiac T 1 , but is subject to measurement error secondary to heart rate variability and acquisition of "apparent" T 1 (T 1 *). Saturation Method using Adaptive Recovery Times for cardiac T 1 Mapping (SMART 1 Map) is an emerging technique that is able to account for variations in heart rate, in conjunction with acquiring true T 1 . We compared myocardial T 1 values obtained with SMART 1 Map to those obtained with MOLLI at 3T and found that SMART 1 Map offered improved variability and repeatability. Consequently, SMART 1 Map should enable increased robustness and precision in myocardial tissue characterization.

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