1. Tiantan Neuroimaging Center for Excellence, China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, 119 West Rd of South 4th Ring Rd, Beijing 100070, China.
2. Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
3. Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
4. CT Clinical Science, Philips Healthcare, Shenyang, China.