1. College of Electronic Information, Sichuan University, Chengdu Sichuan 610000 ., China
2. Information Center/Engineering Research Center of Medical Information Technology, Ministry of Education, West China Hospital of Sichuan University, Chengdu Sichuan 610000, China
3. Information Center/Engineering Research Center of Medical Information Technology, West China Hospital of Sichuan University, Chengdu Sichuan 610000, China
4. Department of Radiology, West China Hospital of Sichuan University, Chengdu Sichuan 610000, China
5. College of Physics, Sichuan University, Chengdu Sichuan 610000, China