Effective removal of chemical-shift artifacts in EPI is a challenging problem especially with severe field inhomogeneity. In this study, water/fat separation thus fat suppression is achieved using the intrinsic signals of point spread function (PSF) encoded EPI (PSF-EPI), in which chemical-shift encoding is realized in the intermediate images with different time shifts. The results from three imaging regions show that this PSF-EPI based method can separate water/fat robustly. Thus fat signals can be effectively removed from EPI even with severe field inhomogeneity.
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