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Abstract #2062

Non-Contrast-Enhanced Abdominal MRA at 3T using Velocity-Selective Pulse Trains

Dan Zhu1, Wenbo Li2,3, Dapeng Liu2,3, Guanshu Liu2,3, Yigang Pei2,3,4, Taehoon Shin5,6, and Qin Qin2,3

1Department of Biomedical Engineering, Johns Hopkins Medical Institutions, Baltimore, MD, United States, 2Department of Radiology, Johns Hopkins University School of Medicine, Baltimroe, MD, United States, 3. F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, MD, United States, 4Department of Radiology, Xiangya Hospital, Central South University, Changsha, China, 5Division of Mechanical and Biomedical Engineering, Ewha Womans University, Seoul, Korea, Republic of, 6Department of Medicine, Case Western Reserve University, Cleveland, OH, United States

Non-contrast-enhanced (NCE) abdominal MR angiography (MRA) with large spatial coverage is clinically desired. The current method using spatially selective inversion (SSI) pulse to null static tissue and blood is only limited to small field of view (FOV) due to its sensitivity to slow arterial inflow. Velocity-selective inversion (VSI) based approach was shown to preserve the arterial blood inside the imaging volume at 1.5T. In this study, a novel strategy of VSI + VSS was proposed for abdominal MRA of large FOV, and its advantage over SSI based approach was demonstrated among healthy subjects at 3T.

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