COMPUTER-ASSISTED 3-D RADIATION TREATMENT PLANNING

这一持续项目的目的是开发和 普适系统在临床上的应用 射束治疗计划。它将使最大限度地利用 现有的治疗设施。该系统基于 广义三维剂量场模型，它涵盖光子和 电子和中子束。该计算机程序和 它的大部分临床实施工作已经完成 可从本地Clinac 4获得的光子场和电子场， Clinac 8和Clinac 20直线加速器。在工作中 2光子能量和9光子能量的微加速器的实现 电子能量和一些不寻常的技术选择目前 等待对微加速器进行大范围的改装。一种新的 给出了交叉束剂量分布的一般描述 开发和出版，a具有重要的扩展 “净分数深度剂量”，现在包括一个描述 电子传输的影响。继续是 我们在VAX上的大多数计算机程序的优化- 11/750系统。努力在当地实施一项新的 发展了非常简单和准确的电子束模型 仍在继续。这项工作的进展一如既往地复杂 由于需要继续提供可靠的日常支助， 临床治疗。

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 electrons as well as neutron beams. The computer program and most of its clinical implementation was completed for the photon and electron fields available from the local Clinac 4, Clinac 8 and Clinac 20 linear accelerators. Work on the implementation of the Microtron with its 2 photon energies and 9 electron energies and some unusual technical options is currently on hold awaiting extensive modification of the microtron. A new generalized description of the cross-beam dose profile has been developed and published, a has an important extension of the "Net Fractional Depth Dose," which now comprises a description of the influence of electron transport. Continuing is optimization of most of our computer programs on the VAX- 11/750 system. Work on implementation of a new locally developed electron beam model of great simplicity and accuracy is continuing. Progress of this work is, as always, complicated by the need for continuing reliable routine support for the clinical treatment.