Fei Xiao1, Mengqi Liu2, Xue-Feng Wang3. 1. Department of Neurology, Chongqing Key Laboratory of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China. 2. Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China. 3. Department of Neurology, Chongqing Key Laboratory of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China. Electronic address: 405034986@qq.com.