1 The Key Laboratory of Biomedical Information Engineering, Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.
2 Department of Nuclear Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
3 Program for Neurotrauma, Neuroproteomics and Biomarker Research, Departments of Psychiatry and Neuroscience, University of Florida, Gainesville, FL, USA.