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Abstract #4697

Comparison of integrated slice-specific dynamic shimming (ishim) and single shot EPI techniques in patients with Crohn’s disease

Junjiao Hu1, Huiting Zhang2, Hu Guo3, Thomas Benkert4, Shan Jiang1, Weijun Situ1, and Jun Liu1
1Department of Radiology,The Second Xiangya Hospital, Central South University, Changsha, China, 2MR Scientific Marketing, Siemens Healthineers, Wuhan, China, 3MR Application, Siemens Healthineers, Changsha, China, 4MR Application Predevelopment, Siemens Healthcare GmbH, Erlangen, Germany


In this study, image quality and apparent diffusion coefficient (ADC) values of conventional single-shot spin-echo echo-planar imaging (SS-EPI) and prototype integrated slice-specific dynamic shimming EPI (ishim_EPI) diffusion-weighted imaging in patients with Crohn’s disease were compared. Results showed that ishim_EPI had better image quality, including fewer distortion artifacts and clearer edges of the lesions. High correlation and good agreement of ADC value were found between the two techniques. Ishim_EPI DWI technique is recommended to replace conventional SS_EPI for the detection of lesions in patients with Crohn’s disease and further in routine intestinal examination.

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