1Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, Korea, Republic of, 2Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Korea, Republic of
Most
water-fat separation methods based on chemical shift effect require multiple
image acquisitions at different echo times, which prolong the total scanning
time. Recently, to resolve aforementioned problems, variable-flip-angle (VFA) fast/turbo SE is developed. In
addition, partial Fourier and/or parallel imaging techniques are incorporated
with VFA fast/turbo SE imaging to speed up acquisition time but directly trade
off with signal-to-noise ratio. To avoid multiple measurements and to tackle
spatially variant noise amplification, we develop a novel water-fat
separation method employing: 1) single-slab 3D VFA GRASE using phase-encoding
blips for imaging time efficiency, 2) phase-independent reconstruction
exploiting spatially complementary information along the echo direction,
and 3) phase-corrected water-fat separation method using robust field
distribution.
