• 1. Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, China;
  • 2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;
GUOHua, Email: huaguo@tsinghua.edu.cn
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Aiming at motion artifacts and off-resonance artifacts in multi-shot diffusion magnetic resonance imaging (MRI), we proposed a joint correction method in this paper to correct the two kinds of artifacts simultaneously without additional acquisition of navigation data and field map. We utilized the proposed method using multi-shot variable density spiral sequence to acquire MRI data and used auto-focusing technique for image deblurring. We also used direct method or iterative method to correct motion induced phase errors in the process of deblurring. In vivo MRI experiments demonstrated that the proposed method could effectively suppress motion artifacts and off-resonance artifacts and achieve images with fine structures. In addition, the scan time was not increased in applying the proposed method.

Citation: WUWenchuan, FANGSheng, GUOHua. Joint Correction for Motion Artifacts and Off-resonance Artifacts in Multi-shot Diffusion Magnetic Resonance Imaging. Journal of Biomedical Engineering, 2014, 31(3): 657-661,670. doi: 10.7507/1001-5515.20140123 Copy

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