Dan Xu1, Brice Fernandez2, Kenichi Kanda3, Robert D. Peters1, Joe K. Maier3, R. Scott Hinks1
1Applied Science Lab, GE Healthcare, Waukesha, WI, United States; 2Applied Science Lab, GE Healthcare, Munich, Germany; 3MR Engineering, GE Healthcare, Waukesha, WI, United States
Homodyne processing with adaptively selected lowpass filter for phase map estimation was previously shown effective in reducing worm-like and shading artifacts sometimes seen in partial Fourier based diffusion weighted echo planar imaging (DW-EPI). Occasionally, image shading artifacts can also appear in DW-EPI images due to gradient induced table vibrations. In this paper, we show that a k-space centroid based adaptive homodyne method can be used to effectively mitigate the vibration related image shading artifacts.
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