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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