Single-shot echo planar imaging (EPI) DTI (SS-DTI) has been commonly used in clinical cervical spine (C-spine) MR scans to get functional and pathologic information as it’s fast and straightforward, but high resolution SS-DTI image suffers from severe geometric distortion. Field mapping method is a classical and simple distortion correction technique, but its performance in C-spine SS-DTI is limited. We used echo planar spectroscopic imaging (EPSI) sequence to acquire the field-map, and modified the conventional field-map post-processing method to promote the correction efficacy. The results show that the proposed method is effective and fast in C-spine SS-DTI distortion correction.
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