高能X射线的硬化校正

Beam hardening correction of high energy X-rays

根据原子的跃迁能量和能量吸收限,确定用与靶材料相同的材料做成滤波片,可以很好的吸收靶物质所产生的低能射线,使最初的多色X射线谱近似单色化,并用基于蒙特卡罗方法的Egsnrc软件对硬化校正方案进行了仿真分析,获得了较好的结果.

Based on the atomic transition energy and absorption layer, it is pointed that the low energy rays emitted by target can be absorbed very well as the filters are made of the material which composed the target. The original polychrome X-ray will turn into almost homochrome. The paper also gives the simulation by Egsnrc software which bases on Monte Carlo （MC） method and obtains a nice effect.