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Abstract #1531

Efficient fat suppression by slice-selection gradient reversal in stimulated echo diffusion weighted liver imaging

Hui Zhang 1 , Ed X. Wu 2,3 , and Hua Guo 1

1 Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China, 2 Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Hong Kong SAR, China, 3 Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong SAR, China

Since Single-shot echo planar imaging (EPI) is sensitive to chemical-shift artifacts and there are higher inhomogeneity at 3T, fat suppression become especially challenging for traditional methods on the liver at 3T. Therefore it is very difficult to do the study about the diffusion time effect on liver diffusion measurements. To solve this, another much more efficient method, slice-selection gradient reversal (SSGR), was incorporated into stimulated echo (STE) diffusion weighted imaging sequence. In vivo results show that SSGR are combined with STE successfully and can suppress the fat signal much more efficiently than traditional methods.

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