1. Department of Radiology and Nuclear Medicine , Xuanwu Hospital, , Changchun Rd. 45, Xicheng district, Beijing 100053 , China
2. Capital Medical University , Xuanwu Hospital, , Changchun Rd. 45, Xicheng district, Beijing 100053 , China
3. Beijing Key Laboratory of Magnetic Resonance Imaging and Brain Informatics , Changchun Rd. 45, Xicheng district, Beijing 100053 , China
4. Beijing Institute of Functional Neurosurgery , Xuanwu Hospital, , Changchun Rd. 45, Xicheng district, Beijing 100053 , China
5. Beijing Engineering Research Center of Radiographic Techniques and Equipment , Institute of High Energy Physics, , Yuquan Rd. 19, Shijingshan district, Beijing 100049 , China
6. Chinese Academy of Sciences , Institute of High Energy Physics, , Yuquan Rd. 19, Shijingshan district, Beijing 100049 , China
7. Department of Neurology , Xuanwu Hospital, , Changchun Rd. 45, Xicheng district, Beijing 100053 , China
8. Department of Neurobiology , Neurology and Geriatrics, , Changchun Rd. 45, Xicheng district, Beijing 100053 , China
9. Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Disorders , Neurology and Geriatrics, , Changchun Rd. 45, Xicheng district, Beijing 100053 , China