Abstract #0739
High-resolution diffusion weighted MRI enabled by multiplexed sensitivity-encoding using projection on convex set (POCSMUSE)
Mei-Lan Chu 1,2 , Hing-Chiu Chang 2 , and Nan-Kuei Chen 2,3
1
Graduate Institute of Biomedical Electronics
and Bioinformatics, National Taiwan University, Taipei,
Taiwan, Taiwan,
2
Brain
Imaging and Analysis Center, Duke University, Durham,
North Carolina, United States,
3
Department
of Radiology, Duke University, Durham, North Carolina,
United States
Diffusion-weighted imaging (DWI) data acquired with
interleaved EPI sequence are highly susceptible to
inter-segment phase variations and aliasing artifacts
induced by motion in the presence of strong diffusion
weighting gradients. Here we report a novel and
efficient approach to remove aliasing artifacts in
interleaved EPI based high-resolution DWI data through
developing a MUSE algorithm based on projection onto
convex set (POCS) 2. The new technique, termed POCSMUSE,
can provide high-quality image without navigator echo,
and can be generally applied to DWI data acquired with
arbitrary k-space trajectory.
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