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Abstract #4113

Combining Slice Dependent Center Frequency Adjustment and High Order Eddy Current Correction for Improved Multistation Diffusion Weighted Imaging

Dan Xu1, Gaohong Wu2, Jun Xie2, Kenichi Kanda2

1Applied Science Lab, GE Healthcare, Waukesha, WI, United States; 2MR Engineering, GE Healthcare, Waukesha, WI, United States

B0 field offset and eddy current induced image distortions often seen in diffusion weighted echo planar imaging can be worsened in multistation settings (e.g., whole body imaging), where the unmatched distortions at station boundaries can create sharp discontinuities, largely degrading image quality. We propose to use a combined high order eddy current and slice dependent center frequency correction to reduce image distortion and bulk shift. A 2-station phantom study shows that the proposed method is capable of minimizing station boundary discontinuities and slice shift trend.