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Abstract #3506

High Resolution Cervical Spine Single-Shot DTI with Distortion Correction Using Modified Field-mapping Method

Yuhui Xiong1, Xiaodong Ma1, Zhe Zhang1, Yishi Wang1, and Hua Guo1

1Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, People's Republic of China

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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