[根据病人的个体几何形状自动调整固定场剂量分布。剂量分布适应模型[2]。

Radiobiologia, radiotherapia Pub Date : 1990-01-01
P Keiner, M Kirsch, F H Glaser
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引用次数: 0

摘要

剂量分布自动适应的起始点是一个起始变量,其参数值根据经验是固定的。在这个起始变量的基础上产生有限数量的变量,并且在每种情况下获得的剂量分布的“质量”由一个附加的测量函数值表示。通过有针对性地搜索野宽度、野起点、野权重和野照射方向的新参数值,逐步改善剂量分布对患者个体几何形状的适应性。
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[Automatic adaptation of stationary field dose distributions to the individual geometry of the patient. II: A model for adaptation of dose distributions].

Starting point for automatic adaptation of a dose distribution is a starting variant which parameters values are fixed as a matter of experience. On base of this starting variant a limited number of variants is produced and the "quality" of the attained dose distribution in each case is expressed by an added measure function value. A gradual improvement of adaptation of dose distribution to individual geometry of patients is done by pointed search of new parameter values for field breadths, field beginning points, field weights, and field insolation directions.

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