Multi-shot EPI can achieve high resolution diffusion imaging but shot-to-shot phase variation correction is indispensable. Previous multi-shot EPI diffusion imaging methods can be categorized into two groups based on different phase navigation strategies: navigator acquired from a second echo and navigator calculated from image-echo itself using parallel imaging technique. These methods may suffer prolonged scan time or limitation from high reduction factor penalty. In this work, we proposed a new strategy for efficient navigating in multi-shot DWI using 1D navigator acquisition with parallel imaging and iterative reconstruction. Results show the proposed methods can effectively correct the motion-induced artifacts in diffusion imaging.
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