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Abstract #2887

Generalized Blipped CAIPI for Interleaved EPI Diffusion Weighted Imaging

Erpeng Dai 1 , Zhe Zhang 1 , Xiaodong Ma 1 , Bida Zhang 2 , Bin Xie 2 , Chun Yuan 1,3 , and Hua Guo 1

1 Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China, 2 Healthcare Department, Philips Research China, Shanghai, China, 3 Department of Radiology, University of Washington, Seattle, WA, United States

Blipped CAIPI has been proposed for single-shot EPI multiband acquisition. However, single-shot EPI is susceptible to geometric distortions, which limit its application for high resolution diffusion weighted (DW) imaging. Multi-shot EPI may alleviate this with interleaved acquisition. Thus a generalized blipped CAIPI sequence and reconstruction framework was proposed for multi-shot DW EPI. The propsed method has achieved less distortions than blipped CAIPI single-shot EPI amd comparable FA maps with single band excitation. Thus this method will be valuable for fast high resolution DWI or DTI in the future.

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