Yu Luo, Chief Physician, Department of Radiology, Department of Radiology, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine，2013-2014 Visiting Scholar at Arizona State University, Fellow of the International Society of Neurovascular Diseases (INSVD), Lecturer, Stroke Comprehensive Training Center, Chinese Stroke Society, Committee Member of Shanghai Radiology Society, Expert of Shanghai Science and Technology Commission Expert Database, Chairman and Secretary General of the Radiology Committee of Shanghai Hongkou Medical Association.