1. Department of Medicine and TherapeuticsChinese University of Hong Kong Hong Kong, China
2. Shenzhen Research InstituteChinese University of Hong Kong Shenzhen China
3. Department of NeurologyFirst Affiliated Hospital of Sun Yat‐sen University Guangzhou China
4. Department of Imaging and Interventional RadiologyChinese University of Hong Kong Hong Kong, China
5. Neurovascular Imaging Research Core and UCLA Stroke Center, Department of NeurologyUniversity of California, Los Angeles Los Angeles CA
6. Department of NeurologyFirst Affiliated Hospital of Zhengzhou University Zhengzhou China
7. Department of NeurologyNanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School Nanjing China
8. Department of RadiologyNanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School Nanjing China