Starkschall G, Henkelmann G C, Ang K K
Department of Radiation Physics, University of Texas M. D. Anderson Cancer Center, Houston 77030.
Int J Radiat Oncol Biol Phys. 1990 Apr;18(4):957-64. doi: 10.1016/0360-3016(90)90423-h.
An interactive system has been developed to aid in determining optimal photon and electron beams and beam weights for radiotherapy treatment planning. Dose constraints at various points are selected and an algorithm searches for a set of beams and weighting factors that satisfy these constraints. In the event that no combination of beam weights satisfies the choice of treatment modalities and dose constraints, the treatment modalities and dose constraints can be modified interactively. The goal of this procedure is different from that of more conventional optimization schemes in which optimal dose values are specified and the optimization algorithm determines the set of beam weights that yields a dose distribution closest to optimal.
已开发出一种交互式系统，以协助确定放射治疗治疗计划的最佳光子束和电子束以及束权重。选择各个点的剂量约束，然后一种算法搜索满足这些约束的一组束和加权因子。如果束权重的任何组合都不满足治疗方式和剂量约束的选择，则可以交互式地修改治疗方式和剂量约束。此过程的目标与更传统的优化方案不同，在传统优化方案中指定了最佳剂量值，优化算法确定产生最接近最佳剂量分布的束权重集。
