Aisheng Dong1, Jianping Lu2, Changjing Zuo2. 1. From Departments of Nuclear Medicine (A.D., C.Z.) and Radiology (J.L.), Changhai Hospital, Second Military Medical University, Shanghai, China. 2. From Departments of Nuclear Medicine (A.D., C.Z.) and Radiology (J.L.), Changhai Hospital, Second Military Medical University, Shanghai, China. cjr.lujianping@vip.163.com.