The technique of drawing region of interest (ROI) was used to obtain the averaged pixel counts and the activity-time (A-T) curve of brain, heart, lung, liver, kidney, tumor, respectively.

• 应用感兴趣区(ROI)技术勾画并测定各时相裸鼠的头部、肺部、心脏部位、肝部、肾区放射性计数、肿瘤部位放射性计数(T),及肿瘤对侧相应部位放射性计数(N),求出相应T/N比值,进行半定量分析;