1. Tsinghua University, School of Medicine, Department of Biomedical Engineering, Beijing 100084, China
2. Xidian University, School of Life Sciences and Technology, Xi’an 710071, China
3. Tsinghua University, School of Medicine, Department of Biomedical Engineering, Beijing 100084, ChinacTsinghua University, Center for Biomedical Imaging Research, Beijing 100084, China