Abstract #0693

Single breath-holding three-dimensional cardiac T2 mapping with low-rank plus sparsity reconstruction

Dongyue Si¹, Shuo Chen¹, Daniel A. Herzka², and Haiyan Ding¹

¹Center for Biomedical Imaging Research, Department of Biomedical Engineering, Tsinghua University, Beijing, China, ²National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States

Three-dimensional (3D) T₂ mapping techniques enables quantitative detection of edematous tissue with whole heart coverage. However, the intrinsically long scan time limits its clinical application. In this study an accelerated 3D T₂ mapping sequence was developed based on low-rank plus sparsity reconstruction. Both retrospective and prospective experiments were performed to evaluate the accuracy and precision of the proposed method. Achieved image quality was comparable with 4 times acceleration. Homogeneous whole left ventricular T₂ map can be acquired in single breath-hold with resolution of 2×2×5 mm³.

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