In this paper is explored the application of optical fibre-based dosimetry in the context of charged-particles MiniBeam Radiation Therapy through comprehensive simulation analyses. A FLUKA simulation of 64 Scintillating Plastic Optical Fibre array was implemented based on a prototype built in our group. The simulations indicate that the proposed system accurately reproduces the peak-and-valley pattern of minibeams. The optical photons transport inside and between fibres was also simulated, revealing that the optical crosstalk is negligible. The resilience of the detector’s electronics under secondary radiation composed of photons and neutrons was assessed. Our results suggest the electronics’ ability to withstand the expected radiation environment in clinical accelerators. This simulation-based investigation provides valuable insights into the feasibility of optical fibre-based dosimetry for MBRT. The results show the potential of using an array of thin scintillating plastic optical fibres to determine the peak–valley dose ratio, which is a key parameter to assess the efficacy of this emerging modality.

中文翻译：

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质子微型束闪烁纤维剂量测定的初步模拟研究


本文通过综合模拟分析，探讨了基于光纤的剂量测定在带电粒子微束放射治疗中的应用。基于我们组构建的原型，对 64 闪烁塑料光纤阵列进行了 FLUKA 模拟。模拟表明，所提出的系统准确地再现了微型光束的峰谷图案。还模拟了光纤内部和光纤之间的光学光子传输，结果表明光学串扰可以忽略不计。评估了探测器电子器件在由光子和中子组成的二次辐射下的弹性。我们的结果表明电子设备能够承受临床加速器中预期的辐射环境。这项基于模拟的研究为基于光纤的 MBRT 剂量测定的可行性提供了宝贵的见解。结果显示了使用薄闪烁塑料光纤阵列来确定峰谷剂量比的潜力，这是评估这种新兴模式功效的关键参数。