Abstract #1710
Rapid phase imaging with 3D echo-planar imaging (EPI) for quantitative MRI A simulation study on image artifacts
Paul Polak 1 , Robert Zivadinov 1,2 , and Ferdinand Schweser 1,2
1
Department of Neurology, Buffalo
Neuroimaging Analysis Center, State University of New
York at Buffalo, Buffalo, NY, United States,
2
Molecular
and Translational Imaging Center, MRI Center, Clincal
and Translational Research Center, Buffalo, NY, United
States
Gradient echo (GRE) imaging has received increased
attention because of the GRE signal's effectiveness in
elucidating information about magnetic tissue properties
and microscopic tissue architecture. However, multi-echo
GRE sequences are hindered by their lengthy acquisition
times. Multi-shot GRE 3D echo-planar imaging (EPI)
attempts to circumvent this problem by acquiring
multiple
k
-space
lines per shot but what effect these acquisition
strategies have on the underlying magnitude and phase
components is not clear. In this work we systematically
investigate the effect of magnitude signal decay and
phase evolution during the readout on the accuracy of
complex-valued GRE signals measured with simulated
segmented 3D EPI sequences.
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