研究单位：[1]Peking Union Medical College Hospital[2]Beijing Tiantan Hospital Beijing,Beijing,China,100050[3]Xuanwu Hospital Capital Medical University Beijing,Beijing,China,100053[4]Peking Union Medical College Hospital Beijing,Beijing,China,100730[5]Southwest Hospital Chongqing,Chongqing,China,400038[6]Daping Hospital Chongqing,Chongqing,China,400042[7]Nanjing General Hospital of Nanjing Military Command Nanjing,Jiangsu,China,210002[8]Jilin University Changchun,Jilin,China,130021[9]Huashan Hospital Fudan University Shanghai,Shanghai,China,200040[10]West China Center of Medical Sciences Chengdu,Sichuan,China,610041[11]The General Hospital Under Tianjin Medical Sciences University Tianjin,Tianjin,China,300052
研究目的：
The purpose of this study is to evaluate the efficacy and safety of stent implantation in patients with symptomatic extra- and intracranial artery stenosis and to determine its role in secondary prevention of ischemic stroke.
