1. Department of Radiology, Beijing Tiantan Hospital Affiliated to Capital Medical University, Tiantan Xili No. 6, Beijing 100050, China
2. Beijing Neurosurgery Institute, Tiantan Xili No. 6, Beijing 100050, China
3. Department of Pain, Beijing Tiantan Hospital Affiliated to Capital Medical University, Tiantan Xili No. 6, Beijing 100050, China
4. Department of Medicine, China North Vehicle Research Institute Worker’s Hospital, Huaishuling No. 4, Fengtai District, Beijing 100072, China
5. Tiantan Community Health Service Center, Fenchang Hutong No. 57, Dongcheng District, Beijing 100061, China
6. Ultrasonic Center, Beijing Tiantan Hospital Affiliated to Capital Medical University, Tiantan Xili No. 6, Beijing 100050, China
7. Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
8. The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China