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Abstract #3393

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

Zhongbiao Xu1, Rongli Zhang2,3, Yingjie Mei1,4, 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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