Cardiovascular MR Multitasking T1-T2 Joint Mapping in Healthy Subjects and Cardiomyopathy Patients on both 1.5T and 3T

Motivation: CMR Multitasking has shown promise for non-ECG and free-breathing myocardial T1/T2 mapping in the heart, primarily on a single vendor 3T, but 2D T1-T2 CMR Multitasking has not yet been shown for different vendors (e.g., GE) and field strengths (e.g., 1.5T). Goal(s): To extend 2D T1-T2 CMR Multitasking to 1.5T and 3.0T GE MR systems. Approach: We implemented a 2D T1-T2 CMR Multitasking sequence on GE MR systems and evaluated its performance in healthy volunteers and patients at two sites. Results: 2D T1-T2 CMR Multitasking generated T1 and T2 maps with image quality comparable to the reference measurements. Impact: 2D T1-T2 CMR Multitasking provides an efficient and subject friendly (free-breathing, non-ECG) option for quantitative CMR assessment across sites and vendors.