放疗治疗计划系统可快捷计算,并实时显示近距离放疗的剂量分布,为医生及时评价治疗计划优劣以及了解靶区,邻周器官的剂量提供了依据,但计算机的计算结果是否准确可信常是医生担心的问题。 材料与方法:校核的方法有多种如热释光或胶片法,但上述方法有各自的局限性。例如LiF热释光片本身灵敏度分散性大,筛选很费时,固有误差一般不低于3％,而且在近源处测量时缺少剂量梯 Radiotherapy treatment planning system can quickly calculate and display the dose distribution of brachytherapy in real time, which provides a basis for doctors to evaluate the treatment plan in time and the dose of target area and adjacent organs, but whether the calculation result of the computer is accurate or not Is the doctor worried about the problem. Materials and methods: There are a variety of methods of checking, such as thermoluminescence or film method, but the above methods have their own limitations. For example, the LiF thermoluminescent sheet itself has a large sensitivity dispersion and the screening is very time-consuming. The intrinsic error is generally not less than 3%, and the lack of a dose ladder when measured at a near source