近来,一些放射性药物已显示出对恶性组织有很大的亲合力,目前应用的全部趋肿瘤放射性药物是非特异性的,它们可被良性肿瘤和感染病灶包括脓肿和肉芽肿摄取。肿瘤显象的灵敏度取决于所用放射性药物、肿瘤类型、它的大小和位置以及过去和目前的治疗。枸橼酸镓-67(~(67)Ga),是应用最广泛的趋肿瘤放射性药物,它的最大价值似乎是在于探测各种细胞类型的支气管癌。肺癌的 Recently, some radiopharmaceuticals have shown a great affinity for malignant tissues. The currently used tumorotropic radiopharmaceuticals are non-specific and can be ingested by benign tumors and infectious lesions including abscesses and granulomas. The sensitivity of tumor imaging depends on the radiopharmaceutical used, the type of tumor, its size and location, and past and current treatments. Barium niobate-67 (~(67)Ga) is the most widely used radiopharmaceutical, and its greatest value seems to lie in the detection of bronchial carcinomas of various cell types. Lung cancer