1. National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, P. R. China
2. Department of Radiology, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
3. Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
4. Psychoradiology Research Unit of Chinese Academy of Medical Sciences, Sichuan University, Chengdu, China