电子束限光筒经阴道照射治疗外生型宫颈癌技术是将套筒型限光筒插入阴道以电子线直接毗邻突向阴道及穹隆的外生肿瘤实施治疗,类似于术中放疗。其优势在于肿瘤组织可得到高剂量照射,因放射剂量衰减梯度大,肿瘤周围正常组织受量少,减少了外照射带来的进一步损伤或手术的难度,提高 E-beam limit light tube transvaginal treatment of exogenous cervical cancer technology is to limit the type of sleeve into the vagina tube to the electronic line directly adjacent to the vaginal and dome of the exogenous tumor implementation of treatment, similar to intraoperative radiotherapy. The advantage is that the tumor tissue can be exposed to high doses of radiation due to a large radial dose attenuation gradient, the normal tissue around the tumor by less, to reduce the further damage caused by external radiation or surgery more difficult to improve