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Abstract #4501

Velocity-selective magnetization-prepared non-contrast-enhanced peripheral MR angiography at 3T

Taehoon Shin 1 , Qin Qin 2 , Jang-Yeon Park 3 , and Sanjay Rajagopalan 4

1 Diagnostic Radiology, University of Maryland, Baltimore, MD, United States, 2 Radiology, Johns Hopkins University, Baltimore, MD, United States, 3 Biomedical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, Korea, 4 Cardiology, University of Maryland, Baltimore, MD, United States

While velocity-selective (VS) magnetization-prepared non-contrast-enhanced MR angiography has shown great promise at 1.5T with advantages of non-subtractiveness and large 3D FOV, its feasibility at 3T remains questionable due to the sensitivity of VS excitation to B0 and B1 inhomogeneities. In this study, we present an updated version of VS-MRA pulse sequence which employs paired refocusing for reducing the sensitivity to B0 and B1 offsets and double VS preparations for removing stripe artifacts caused by imperfect refocusing. The feasibility of the proposed method is shown in a healthy subject.

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