RADIATION FIELD MODELING AND COMPUTERIZED TREATMENT PLANNING

医学成像和定位技术的巨大进步 给物理学和计算机带来了挑战 技术，以扩展计算机化的治疗模拟（规划和 优化）能力。 计算分布的能力 光子束和电子束产生的吸收剂量的最 一般特征是放射治疗的基础。我们的光子 之前已经描述了电子束辐射场模型。一个 这些模型的一个重要优点是， 实验数据，因此可以很容易地实现。 在Macintosh上扩展我们的射束治疗计划程序Mac TPS 装备还在继续。目前正在对该系统进行评估， 现有的基于Vax-750的系统用于“常规”多切片计划。3-D 分段成像现在被广泛应用， 不断扩大，以新的要求和建议为指导， 医护人员 这是一个越来越多的兴趣在社区。一个广泛 有几个层次的用户指南手册是可用的，并保持了- 最新的 DCRT的实验项目，以探索连接的潜力 我们的Mac II系统到一个大规模的并行处理系统，以减轻 这方面进展缓慢。该项目面临的主要问题是， 大量数据的实时双向传输。的 问题会存在一段时间。充足的人员配置也是一个主要因素。 问题.

The vast improvement of the medical imaging and localization technology over the recent past has brought a challenge to physics and computer technology to extend the computerized treatment simulation (planning and optimization) capabilities. The capability to calculate the distribution of absorbed dose produced by photon beams and electron beams to the most general characteristics is fundamental to radiotherapy. Our photon and electron beam radiation field models have been described before. An important advantage of these models is that they require relatively few experimental data and thus can be implemented very easily. Expansion of our beam treatment planning program Mac TPS on Macintosh equipment is continuing. The system is being evaluated in parallel to the existing Vax-750 based system for "conventional" multi-slice planning. 3-D segmented imaging is being applied extensively now, and is being continually expanded, guided by new demands and suggestions from the medical staff. The is a growing interest in the community. An extensive manual with several levels of user guidance is available and is kept up- to-date. The experimental project with DCRT to explore the potential of connecting our Mac II system to a massive parallel processing system to alleviate this aspect is slowly progressing. The project faces major problems with the real-time 2-way transmission of very large amounts of data. The problems will be present for a while. Adequate staffing is also a major problem.