Abstract #4500
Velocity-Selective Magnetization-Prepared Non-Contrast-Enhanced Cerebral MR Angiography at 3T
Qin Qin 1,2 , Taehoon Shin 3 , Michael Schar 1 , Hua Guo 4 , and Ye Qiao 1
1
Radiology, Johns Hopkins University,
Baltimore, Maryland, United States,
2
Kirby
Center, Kennedy Krieger Institute, Baltimore, Maryland,
United States,
3
Radiology, University of
Maryland, Baltimore, Maryland, United States,
4
Center
for Biomedical Imaging Research, Biomedical Engineering,
Tsinghua University, Beijing, China
The new velocity-selective saturation (VSS) pulse train,
by embedding a pair of composite pulses for refocusing
in each k-segment and phase cycling applied over
consecutive k-segments, offers improved robustness to
B0/B1 inhomogeneity in the brain at 3T.
Velocity-selective magnetization-prepared
non-contrast-enhanced cerebral MR angiography was
demonstrated on healthy volunteers. Compared with TOF
MRA, VSS prepared MRA depicted more distal branches of
cerebral arteries and allowed for the whole-brain
coverage without the requirement of section positioning
orthogonal to the direction of flow.
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