Abstract #3393

Iteration-based motion compensation method for multi-shot diffusion imaging

Zhongbiao Xu¹, Rongli Zhang^2,3, Yingjie Mei^1,4, Zhifeng Chen¹, Yaohui Wang⁵, Ed X. Wu⁶, Feng Huang⁷, and Yanqiu Feng¹

¹School of Biomedical Engineering, Guangdong Provincial Key Laborary of Medical Image Processing, Southern Medical University, Guangzhou, China, ²School of Medicine, South China University of Technology, Guangzhou, China, ³Guangdong General Hospital, School of Medicine, South China University of Technology, Guangzhou, China, ⁴Philips Healthcare, Guangzhou, China, ⁵Division of Superconducting Magnet Science and Technology, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China, ⁶Laboratory of Biomedical Imaging and Signal Processing, University of Hong Kong, Hongkong, China, ⁷Neusoft Medical System, Shanghai, China

Multi-shot EPI technique is vulnerable to patient motion. Though CIRIS proposed by our group tackles the infrequent macroscopic motion in multi-shot EPI by clustering and registration, it cannot deal with the frequent motion (e.g. shot-wise motion). In this work, an iterative motion compensation frame was introduced to correct for the frequent motion during the multi-shot acquisition. The simulation experiments demonstrated that the proposed method can obtain improved image quality in the presence of infrequent motion, and even correct for the shot-wise motion, compared to CIRIS.

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