Abstract #1173

Accelerated Aortic Flow Assessment with Compressed Sensing Using Sparsity of the Complex Difference Image as an Additional Constraint

Yongjun Kwak¹,², Seunghoon Nam¹,², Mehmet Akcakaya¹, Tamer A. Basha¹, Beth Goddu¹, Warren J. Manning¹, Vahid Tarokh², Reza Nezafat¹

¹Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States; ²SEAS, Harvard University, Cambridge, MA, United States

One of the major limitations of phase contrast imaging is its long scan time. In this study, we propose an accelerated phase contrast MR approach in which the sparsity of the complex difference (CD) image is used as the sparsifying transform to improve the compressed sensing (CS) reconstruction. The efficacy of the proposed method was demonstrated in both retrospective undersampling and prospective accelerated flow imaging in ascending aorta.