放疗在宫颈癌的治疗中占有十分重要的地位,根治性放疗在西欧和北美更被认为是各期宫颈癌治愈方法之一。标准的宫颈癌放疗由盆腔外照射和腔内近距离治疗构成。腔内近距离治疗围绕源形成陡峭的剂量梯度,在给予充足的剂量杀灭肿瘤的同时周围危及器官受照剂量却很低。一些优于现有计划系统的新治疗计划概念已出现。基于这些概念的系 Radiation therapy plays a very important role in the treatment of cervical cancer. Radiation therapy is considered as one of the cure methods for cervical cancer in Western Europe and North America. Standard cervical cancer radiotherapy by external pelvic and intracavitary brachytherapy form. Intracavitary brachytherapy forms a steep dose gradient around the source, with low doses of surrounding organs at risk while giving sufficient doses to kill the tumor. Some new treatment planning concepts have emerged that are superior to existing planning systems. Department based on these concepts