Yongjun Cao1, Jijun Shi2, Dai Shi3, Chenchen Liu3, Lijia Wang4,5. 1. Department of Neurology, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China. yongjuncao@126.com. 2. Department of Neurology, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China. shijijun2008@126.com. 3. Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China. 4. Department of Neurology, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China. 5. Department of Neurology, The First People's Hospital of Changshu, Suzhou, China.