Simultaneous multi-slab imaging (SMSlab) can achieve high-resolution DWI with high SNR efficiency, but image distortions remain a problem. Joint reconstruction of blip-up/down EPI data can correct for distortion and reduce g-factors simultaneously. This study proposed a joint reconstruction framework with intrinsic distortion correction for SMSlab. Three sampling patterns were compared in terms of levels of distortions and g-factors. According to the results, a multi-shot acquisition should be used to reduce the distortion. Combined with the controlled aliasing in parallel imaging (CAIPI) sampling pattern, it can further reduce the g-factors.
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