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Abstract #2807

Investigations on Motion Corruption for Diffusion Weighted Imaging from Population Analysis

Yishi Wang 1 , Zhe Zhang 1 , Xue Zhang 1 , Xuesong Li 1 , Sheng 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 Department of Radiology, China-Japan Friendship Hospital, Beijing, China, 3 Department of Radiology, University of Washington, Seattle, Washington, United States

Pulsatile brain motion can induce DTI data corruption and affects DTI metrics. Data rejection methods in both image domain and k-space domain have been proposed. In this study, we use large cohort data to evaluate the data rejection rate in k-space in order to investigate the extent to which a specific region suffers from motion. A map of data rejection rate on a standard brain template was obtained from the mean of 77 subjects. Motion affection was quantified and suggestions on data acquisition scheme were given based on the statistical results.

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