Department of Radiation Oncology, Medical University of Vienna, Vienna 1090, Austria.
Radiation Physics, Technische Universität Wien, Vienna 1040, Austria.
Radiat Prot Dosimetry. 2023 Oct 11;199(15-16):1973-1978. doi: 10.1093/rpd/ncac252.
The aim of this work is to present the first microdosimetric spectra measured with a miniaturised tissue-equivalent proportional counter in the clinical environment of the MedAustron ion-beam therapy facility. These spectra were gathered with a 62.4-MeV proton beam and have been compared with microdosimetric spectra measured in the 62-MeV clinical proton beam of the CATANA beam line. Monte Carlo simulations were performed using the Geant4 toolkit GATE and a fully commissioned clinical beam line model. Finally, similarities and discrepancies of the measured data to simulations based on a simple and complex detector geometry are discussed.
本工作旨在展示在 MedAustron 离子束治疗设施的临床环境中，使用微型组织等效比例计数器测量的首个微剂量学能谱。这些能谱是用 62.4MeV 质子束采集的，并与在 CATANA 束线的 62MeV 临床质子束中测量的微剂量学能谱进行了比较。使用 Geant4 工具包 GATE 并结合完全委托的临床束线模型进行了蒙特卡罗模拟。最后，讨论了基于简单和复杂探测器几何结构的测量数据与模拟之间的相似性和差异。
