放射活性同位素与肿瘤特异的单克隆抗体(以下简称单抗)连接后,可作肿瘤显象制剂,它注入体内后免疫显象剂中的单抗可吸附于肿瘤上。放射活性原子辐射出γ射线,形成影象,使用γ射线照相机可拍摄下来。目前已有X射线和CAT断层可用于检查许多癌瘤,但单抗显象制剂将能检测出目前方法所不能检查出的恶性病变。显象制剂能证实癌瘤类型,帮助 The radioactive isotope is connected with a tumor-specific monoclonal antibody (hereinafter referred to as a monoclonal antibody) and can be used as a tumor imaging preparation. After injection into the body, the monoclonal antibody in the immuno-imaging agent can be adsorbed on the tumor. Radioactive atoms radiate gamma rays and form images, which can be photographed using a gamma camera. X-ray and CAT faults are currently available for examination of many cancers, but monoclonal antibody imaging agents will detect malignant lesions that cannot be detected by current methods. Imaging agents can confirm the type of cancer and help