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Abstract #1297

Improving 3D MERGE Black-Blood Imaging Using an Additonal Time Delay and Compressed Sensing

Bo Li1, Li Dong2, Yuchen Zhang3, Jun Li2, Xiaoying Wang4, 5, Jue Zhang1, 5, Jing Fang1, 5

1College of Engineering, Peking University, Beijing, China; 2Department of Radiology, Anzhen Hospital, Capital Medical University, Beijing, China; 3Department of Cardiology, Anzhen Hospital, Capital Medical University, Beijing, China; 4Department of Radiology, Peking University First Hospital, Beijing, China; 5Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China

In this work, an additional time delay (TD) was introduced to 3D MERGE sequence to improve signal intensity. Compressed sensing (CS), an undersampling technique, was used to maintain a constant scan time. nine healthy volunteers were recruited for this study. Results showed: (1) Significant improvements in vessel wall SNR and wall-lumen CNR were found; (2) Effective blood suppression can be achieved; (3) Good agreements of wall area and lumen area were also obtained between the proposed technique and the existing MRI protocol.