1. Institute of Electrical Engineering, Yanshan University, Qinhuangdao, China
2. College of Electrical and Control Engineering, North China University of Technology, Beijing, China
3. Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
4. Department of Magnetic Resonance Imaging, Qinhuangdao Municipal No. 1 Hospital, Qinhuangdao, China