WANG Quan-shi1,WANG Xin-lu2,LI Hua3,WANG Qiao-yu1,WANG Quan-ying4,YANG Guang-xiao4 1PET Center,Nanfang Hospital,Southern Medical University,Guangzhou 510515,China;2PET Center of Department of Nuclear Medicine,Guangzhou General Hospital of Guangzhou Command,Guangzhou 510010,China;3Third Affiliated Hospital of Sun Yat-sen University,Guangzhou 510630,China;4Xi’an Huaguang Bioengineering Company,Xi’an 710025,China