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Abstract #1327

The Influence of Navigator Acquisition on 3D Multi-slab DWI Reconstruction: A Comparison between 2D, 3D Acquired and Synthesized Navigator

Simin Liu1, Erpeng Dai2, and Hua Guo1
1Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China, 2Department of Radiology, Stanford University, Stanford, CA, United States

3D multi-slab is SNR-efficient for isotropic high-resolution diffusion imaging. It can be combined with simultaneous multi-slice, namely SMSlab, for optimal SNR efficiency. In multi-slab, either 2D or 3D navigators can be acquired for inter-shot phase correction, while in SMSlab, only 2D navigators can be acquired. One study has proposed to synthesize a 3D navigator from a 2D navigator in SMSlab, yet lacking a comparison. This study compares the performance of 2D, 3D acquired and synthesized navigators. The synthesized 3D navigator shows similar performance with the acquired 3D navigator in multi-slab and outperforms the 2D navigator in both multi-slab and SMSlab.

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