Abstract #0884
The Impact of Dixon Water-Fat Separation on Motion Correction in PROPELLER MRI
Michael Schr 1,2 , Holger Eggers 3 , Nicholas R Zwart 2 , Yuchou Chang 2 , Akshay Bakhru 4 , and James G Pipe 2
1
Philips Healthcare, Cleveland, OH, United
States,
2
Neuroimaging
Research, Barrow Neurological Institute, Phoenix, AZ,
United States,
3
Philips
Research, Hamburg, HH, Germany,
4
Philips
Healthcare, Bangalore, Karnataka, India
The readout direction in PROPELLER MRI is rotated over
180. The water-fat shift may blur fat, or the motion
correction may try to remove the fat blurring at the
expense of water sharpness. Here we propose to use Dixon
water-fat separation per blade to reconstruct either
water only images, or to combine water with fat shifted
back to its original position for each blade before
running the PROPELLER motion correction algorithm. This
work shows that the proposed method improves shift
estimation, reduces blurring in images acquired with and
without bulk motion, and allows water and fat separated
PROPELLER MRI.
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