COMPUTER-ASSISTED 3-D RADIATION TREATMENT PLANNING

这一持续项目的目的是为了开发和临床 一种通用外束处理系统的实现 计划。它将使现有的处理方法得到最佳利用 设施。该系统基于广义的三维剂量场模型 它涵盖了光子、电子以及中子束。这台电脑 该计划及其大部分临床实施工作已经完成 可从本地Clinac 4、Clinac 8和 Clinac 20直线加速器。还有更多的工作要做 2光子能量9电子微加速器的实现 基因和一些不同寻常的技术选择。当前的能力 包括对大多数辐照技术交互模拟，包括 大多数束流修正装置的效果。横向患者轮廓是 叠加在相应的CT扫描上，以便可以关联剂量分布 向解剖学致敬。在四台新的辐射机器中，有三台已经 实施常规治疗计划。工作仍在继续 我们在VAX-11/750系统上的大多数计算机程序的优化， 来自旧的PDP 11/70系统。像以前一样，这项工作因 临床治疗需要持续可靠的常规支持。 继续高度重视多功能性、完整性和 文档的质量以及可互换性。泛化有 通过引入患者代表由一名 密度栅格。

The purpose of this continuing project is the development and clinical implementation of a generalized system for external beam treatment planning. It will enable the optimum utilization of existing treatment facilities. The system is based on a generalized 3-D dose field model which covers photon and electron as well as neutron beams. The computer program and most of its clinical implementation was completed for the photon and electron fields available form the local Clinac 4, Clinac 8 and Clinac 20 linear accelerators. More work is to be done on the implementation of the Microtron with its 2 photon energies and 9 electron enegies and some unusual technical options. The current capabilities include interactive simulation of most irradiation techniques, including the effect of most beam modifying devices. Transverse patient contours are overlaid on corresponding CT scans so that dose distribution can be related to the anatomy. Three of the four new radiation machines have been implemented for routine treatment planning. Work is continuing on optimization of most of our computer programs on the VAX-11/750 system, from the old PDP 11/70 system. This work is, as before, complicated by the need for continuing reliable routine support for the clinical treatment. Great attention is continuing to be paid versatility, completeness and quality of documentation, as well as exchangeability. Generalization has progressed considerably by the introduction of patient representation by a density grid.