外照射治疗数学模型

External Beam Calculation Model

治疗计划的外照射模型用来对包含多个影像层面的外照射患者的三维剂量分布进行计算。每一个射束即可为固定的SAD照射亦可为连续旋转照射。实际上,任意一个计划都可以有任意数目的射束。剂量在分布于待计算区的网点上被计算。该距阵尺寸可据定义在每个层面100至16384个计算点不等。

The external beam calculation module of TPS is used to calculate the three - dimensional dose distributions across multiple slices of a teletherapy patient. Each of the beams can be a fixed SAD beam or a rotating beam. Virtually any number of beams can be added to any plan.Doses are calculated at grid points that are spaced across the calculation area.The matrix size can vary from 100 to 16, 384 points per slice.At least 128 slices can be calculated and demonstrate its dose distributions simultaneously.