Abstract #0688
Diffusion Imaging Of Head And Neck At High Angular And Spatial Resolution Using Multi-Shot Spirals
Merry Mani 1 , Mathews Jacob 2 , and Vincent Magnotta 3
1
Dept of Psychiatry, University of Iowa, Iowa
City, IA, United States,
2
Dept
of Electrical and Computer Engineering, University of
Iowa, Iowa City, IA, United States,
3
Dept
of Radiology, University of Iowa, Iowa City, IA, United
States
Brain regions such as pons, cerebellum, spine etc are
difficult to image using diffusion imaging due to the
presence of air/bone/tissue interfaces causing severe
susceptibility artifacts. In addition, cardiac
pulsation, respiratory and swallowing motions also
adversely affect these regions. We present a high
spatial and angular resolution diffusion scheme that can
image these regions without being severely corrupted by
these artifacts. The proposed method uses a compressed
sensing based joint k-q space under-sampling using
multi-shot variable density spirals to image these
regions. The motion-compensated joint reconstruction can
recover diffusion orientation distribution functions at
high resolution to enable the study of these regions.
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