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自从应用镭治疗宫颈癌以来,已有60～70年历史,被认为是恶性肿瘤放射治疗中最佳治疗方法之一.但最大缺点是镭疗工作人员受放射性损害.虽然增加铅屏蔽和在配镭、清毒、输送方面采用某些自动化装置,但仍需手工操作接近放射源.因此,头、手或全身接受放射线量还是相当大的.为了解决放射防护,60年代初有几个医疗中心创造了“后装技术”.所谓后装技术就是先在病人身上正确地放置好宫腔管和阴道施用器,然后在安全防护条件下或遥控装置自隔离室将放射源通过管道输送到病人身上的宫腔管和阴道施用器内.这样工作人员基本上不接触放射线.由于置放施用器时没有放射源,医师便可以从容地给病人
Since the application of radium for cervical cancer has been 60 to 70 years of history, is considered one of the best treatment of malignant tumor radiation therapy, but the biggest drawback is radiotherapy workers affected by radioactive damage .Although increased lead shielding and in the distribution Radiolocation, detoxification and delivery of certain automated devices, but still require manual access to radioactive sources, so head, hand or whole body to receive radiation is still quite large .In order to solve the radiological protection, in the early sixties several medical centers Created the “after-loading technology.” The so-called after-loading technique is to place the uterine canal and vaginal applicator correctly on the patient and then deliver the radioactive source to the patient from the isolation room under safeguards or remote control devices Of the uterine canal and the vaginal applicator so that the worker is essentially free of radiation and since the radioactive source is placed in the applicator, the physician can comfortably give the patient