1. Department of Radiology, No. 926 Hospital, Joint Logistics Support Force of PLA, Kaiyuan, Yunnan, China
2. Department of Radiology, The Affiliated Dongguan Houjie Hospital of Guangdong Medical University, Dongguan, Guangzhou, China
3. Department of Imaging Center, Guangdong 999 Brain Hospital, Guangzhou, Guang Dong, China
4. Department of Radiology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China