目的寻找一种可用于计算放射治疗不规则野的散射剂量的可靠方法。
Objective To find a method for calculating the scatter dose of irregular fields.
扫描机，所谓的“反射散射扫描仪”，发射出的电离辐射剂量相当于牙科辐射X射线的1%或更少。
The scanning machines, called "backscatter scanners," deliver a dose of ionizing radiation equivalent to 1 percent or less of the radiation in a dental X-ray.
方法采用均质水等效矩形体模，在不同散射半径条件下观察靶区和正常组织界面上的剂量梯度随散射半径的变化。
Methods Using a homogeneity water equivalent rectangular phantom, the dose gradients at the interface of target volume and normal tissue was evaluated under different scatter radii.
应用推荐