Abstract #0343

Motion-corrected K-space Reconstruction for High Resolution Multi-shot Diffusion Imaging

Fuyixue Wang¹, Zijing Dong¹, Xiaodong Ma¹, Erpeng Dai¹, Zhe Zhang¹, and Hua Guo¹

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

Recently, several techniques have been developed to be capable of correcting shot-to-shot phase variations of multi-shot acquisition in order to obtain diffusion images with high spatial resolution. However, longer acquisition time of multi-shot EPI makes these methods more sensitive to bulk motion. In this work, we developed a novel k-space based motion corrected reconstruction method for 2D navigated multi-shot DWI. Motion simulations and in-vivo head motion experiments validated the effectiveness of the proposed method, which can remove the ghosting artifacts from minuscule motion and the blurring from bulk motion.

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