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Abstract #4589

Optimizing Diffusion-Weighted MRI of the Kidneys: Comparison between Simultaneous Multi-Slice and Integrated Slice-by-Slice Shimming Echo Planar Sequences

Gumuyang ZHANG1, Tianyi Qian2, Bing Shi1, Hailong Zhou1, Alto Stemmer3, Xiaoyan Peng4, Yan Liu4, Limeng Chen4, Hao Sun1, Huadan Xue1, and Zhengyu Jin1

1Radiology, Peking Union Medical College Hospital, Beijing, China, 2MR Collaboration, Siemens Healthcare Ltd., Beijing, China., Beijing, China, 3Siemens Healthcare, Application Development, Germany, Erlangen, Germany, 4Nephrology, Peking Union Medical College Hospital, Beijing, China

This study aimed to evaluate the image quality and scan time of the simultaneous multi-slice (SMS) technique compared to integrated slice-by-slice shimming (iShim[MB1] ) single-shot echo planar imaging (ss-epi) for diffusion-weighted imaging (DWI) of the kidneys. Six healthy subjects and 22 patients with renal disease underwent both SMS and iShim DWI scans on a 3T MR scanner. Despite the average scan time of SMS DWI being decreased by 53.5% compared to iShim DWI, the image quality of SMS DWI was slightly better, with a higher signal-to-noise ratio and similar contrast-to-noise ratio. ADC values of the kidneys were comparable in both DWI sequences. [MB1]Our product name is "SliceAdjust".

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