Mesbahi Asghar, Reilly Andrew J, Thwaites David I
Medical Physics Department, Tabriz University of Medical Sciences, Tabriz, Iran.
Appl Radiat Isot. 2006 Jun;64(6):656-62. doi: 10.1016/j.apradiso.2005.12.012. Epub 2006 Feb 7.
Monte Carlo modeling of a linear accelerator is the first and most important step in Monte Carlo dose calculations in radiotherapy. We developed a photon beam model for Varian 2100EX for dose calculation purposes using MCNP4C Monte Carlo code. Results of our modeling were in close agreement with our measurements. The effect of beam width on percentage depth doses and beam profiles was studied. Our results showed that electron beam width could be tuned using large field beam profile at the depth of maximum dose.
直线加速器的蒙特卡罗建模是放射治疗中蒙特卡罗剂量计算的首要且最重要的步骤。我们使用MCNP4C蒙特卡罗代码开发了用于瓦里安2100EX的光子束模型以进行剂量计算。我们建模的结果与我们的测量结果密切相符。研究了射束宽度对百分深度剂量和射束剖面的影响。我们的结果表明，电子束宽度可在最大剂量深度处使用大射野射束剖面进行调整。
