Standard radiotherapy treatment planning software is not able to properly account for the presence of metal artefacts in the irradiation field, thus resulting in reduced accuracy of the treatment delivery to the tumor. To overcome this, Monte Carlo (MC) codes are used for the simulation of energy deposition in the target.

In this study the feasibility of MC code FLUKA for the evaluation of low energy X-ray deposition patterns/dose distributions in the irradiated 3D printed anthropomorphic head and neck phantom with integrated metal artefact (metal tooth in the lower jaw) has been assessed comparing FLUKA simulations with experimental results, obtained when evaluating energy distribution patterns on irradiated EBT2 films. A good agreement between experimental and simulation results was found in general, however in field specific cases discrepancies with ~5% uncertainty was estimated. This indicates potential of FLUKA simulations for orthovoltage therapy applications, however the need for more accurate adjustment of FLUKA simulations must be considered.

标准的放射治疗治疗计划软件无法正确说明辐射场中是否存在金属假象，从而导致降低了向肿瘤的治疗准确性。为了克服这个问题，蒙特卡洛（MC）代码用于模拟目标中的能量沉积。

在这项研究中，评估了MC代码FLUKA在评估带有集成金属假象（下颌中的金属齿）的3D打印拟人化头颈部假体的低能X射线沉积模式/剂量分布中的可行性，并与FLUKA进行了比较在评估辐照的EBT2薄膜上的能量分布模式时获得的模拟和实验结果。一般而言，实验结果和模拟结果之间有很好的一致性，但是在特定领域的情况下，估计误差约为5％。这表明了FLUKA模拟在正电压治疗应用中的潜力，但是必须考虑更精确地调整FLUKA模拟的需求。