A model for computer-controlled delivery of 3-D conformal treatments.
A model for computer-controlled delivery of 3-D conformal treatments.
复制标题
计算机控制的 3D 适形治疗交付模型。
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
R. Mohan
中科院分区：
文献类型：
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作者：
G. Mageras;K. C. Podmaniczky;R. Mohan
三维适形辐射治疗非常复杂，并且可能包括大量共面和非共面光束，实际上所有光束都被成形并且还可以采用任意强度调制。使用传统手段进行此类治疗是高度劳动密集型的，并且仅限于相对较少的田地。提出了一种系统的通用模型，该系统可以使用配备多叶准直器的计算机控制治疗机快速、安全地提供 3-D 适形治疗。该模型强调由用户机构编程的外部计算机和治疗机器制造商专有的控制计算机之间的任务分离。所采用的治疗方案由一系列固定字段（称为段）组成，这些固定字段在无需人工干预的情况下连续传递。来自 3D 适形治疗计划系统的所有分段的设置由外部计算机下载到治疗机的控制计算机中。在患者设置过程中，控制计算机使操作员能够在没有辐射的情况下逐步完成计算机控制的节段设置，以确保不发生碰撞，并在必要时允许调整设置参数。外部计算机验证治疗设置并允许控制计算机逐段执行治疗。讨论了模型的安全方面和可能出现的异常情况。
Three-dimensional conformal radiation treatments are highly complex and may comprise a large number of coplanar and noncoplanar beams, virtually all of which are shaped and may also employ arbitrary intensity modulation. The delivery of such treatments with conventional means is highly labor intensive and limited to a relatively small number of fields. A generalized model for a system that can deliver 3-D conformal treatments rapidly and safely using a computer-controlled treatment machine equipped with a multileaf collimator is presented. The model emphasizes the separation of tasks between an external computer programmed by the user institution and a control computer proprietary to the treatment machine manufacturer. The treatment scheme that is employed consists of a sequence of fixed fields, called segments, which are delivered in succession without human intervention. Settings for all segments, derived from a 3-D conformal treatment planning system, are downloaded by the external computer into the control computer of the treatment machine. During patient setup, the control computer enables the operator to step through computer-controlled setup of the segments without radiation to ensure the absence of collisions, and to allow the adjustment of setup parameters if necessary. The external computer verifies the treatment setup and permits the control computer to carry out the treatment segment by segment. Safety aspects of the model and anomalous situations which may arise are discussed.