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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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