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Abstract #4569

Distortion Correction of Single-Shot Spin-Echo EPI of the Liver at 3T

Kevin M. Koch1, Dominic Holland2, Dan Xu1, Ajit Shankaranarayanan3, Anders Dale2

1Global Applied Science Laboratory, GE Healthcare, Waukesha, WI, United States; 2Department of Neurosciences, University of California, San Diego, United States; 3Global Applied Science Laboratory, GE Healthcare, Menlo Park, CA, United States

A variety of techniques and algorithms have been proposed for distortion correction of EPI in the brain. However, EPI is also commonly used for diffusion imaging in other parts of the body. Correction of susceptibility-induced image distortions is a greater challenge in many of these anatomic regions. Here, we investigate the capability of a reversed-gradient-polarity acquisition and algorithm in correcting single-shot spin echo images of the human liver at 3T. Significant improvements in liver shape and positioning are demonstrated using the presented methods.