由于近距离照射放疗贴近肿瘤组织 ,使肿瘤组织可以得到有效的杀伤剂量 ,而临近的正常组织 ,由于辐射剂量随距离增加而迅速衰落 ,受量较低。近年 ,近距离后装治疗已成为外照射放疗的重要辅助手段之一 ,敷贴照射技术是近距离后装照射的一种照射方式 ,临床上适用于皮肤、浅表组织 Because close-range irradiation of radiotherapy close to the tumor tissue, the tumor tissue can get an effective dose of killing, and the adjacent normal tissue, due to the radiation dose with the distance increased rapidly decline, by the amount of lower. In recent years, short-distance after-treatment has become an important auxiliary means of external beam radiotherapy. Application of irradiation technology is a short-range after-load irradiation of a radiation method, clinically applicable to the skin, superficial tissue