LI Yi-zhuo1,2,HUANG Zi-lin1,2,WEI Da-nian1,3,XIE Chuan-miao1,2,HE Hao-qiang1,2,WEI Yi-fei4,CHEN Lin1,2,WU Pei-hong1,2 1State Key Laboratory of Oncology in South China,Guangzhou 510060,China;2Department of Imaging and Interventional Therapy,3Department of Neurosurgery,Tumor Hospital,Sun Yat-sen University,Guangzhou 510060,China;4Department of Radiology,People’s Hospital of Anyuan,Anyuan 342100,China