1. Stroke Center Office, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei 075000, China
2. Department of Neurology, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei 075000, China
3. Imaging Department, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei 075000, China
4. Information Section, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei 075000, China