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Published on: May 9, 2014
First microdosimetric measurements with a tissue-equivalent proportional counter at the MedAustron ion-beam therapy
Sandra Barna1, Cynthia Meouchi2, Giulio Magrin3
1Department of Radiation Oncology, Medical University of Vienna, Vienna 1090, Austria.
Abstract:
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.
