Abstract #2524
Black-blood vessel wall imaging using SLR designed velocity selective RF pulse
Yunduo Li 1 , Lirong Yan 2 , Mayank Jog 2 , Robert Smith 2 , Karen Ying 3 , Rui Li 4 , Chun Yuan 4 , and Danny JJ Wang 2
1
Department of Biomedical Engineering,
Tsinghua University, Beijing, Beijing, China,
2
Neurology,
UCLA, CA, United States,
3
Department
of Engineering Physics, Tsinghua University, Beijing,
China,
4
Center
for Biomedical Imaging Research, Tsinghua University,
Beijing, China
A novel method which employs the velocity-selective RF
pulse to suppress the signal from flowing blood is
presented and a design example is shown. Simulation
results demonstrate that the velocity-selective profile
of the designed pulse meets the demand of vessel wall
imaging. Phantom and in-vivo studies verified the
designed pulse can invert flowing spins of high velocity
and leave the static spins undisturbed. All results
imply that the pulse is potentially suitable for blood
suppression in vessel wall imaging. The method enables
the pulse designer to trade off among important
parameters such as pulse duration, cut-off velocity and
pass-band ripples.
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