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

Synopsis

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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