Microdosimetric assessment of the radiation quality of a therapeutic proton beam: comparison between numerical simulation and experimental measurements
| العنوان: | Microdosimetric assessment of the radiation quality of a therapeutic proton beam: comparison between numerical simulation and experimental measurements |
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| المؤلفون: | Peter Beck, P. Colautti, S. Rollet, Joel Herault, E. Gargioni, Marcin Latocha, D. Moro, Bernd Grosswendt, Michael Wind |
| المصدر: | Radiation Protection Dosimetry. 143:445-449 |
| بيانات النشر: | Oxford University Press (OUP), 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Quantitative Biology::Tissues and Organs, Physics::Medical Physics, Monte Carlo method, Sobp, Proportional counter, Bragg peak, Models, Biological, Imaging phantom, Optics, Proton Therapy, Relative biological effectiveness, Humans, Computer Simulation, Radiology, Nuclear Medicine and imaging, Melanoma, Physics, Radiation, Radiological and Ultrasound Technology, business.industry, Eye Neoplasms, Public Health, Environmental and Occupational Health, General Medicine, Radiotherapy, Computer-Assisted, Treatment Outcome, Laser beam quality, Radiotherapy, Conformal, business, Beam (structure) |
| الوصف: | Using protons for the treatment of ocular melanoma (especially of posterior pole tumours), the radiation quality of the beam must be precisely assessed to preserve the vision and to minimise the damage to healthy tissue. The radiation quality of a therapeutic proton beam at the Centre Antoine Lacassagne in Nice (France) was measured using microdosimetric techniques, i.e. a miniaturised version of a tissue-equivalent proportional counter. Measurements were performed in a 1-µm site at different depths in a Lucite phantom. Experimental data showed a significant increase in the beam quality at the distal edge of the spread-out Bragg peak (SOBP). In this paper, the numerical simulation of the experimental setup is done with the FLUKA Monte Carlo radiation transport code. The calculated microdosimetric spectra are compared with the measured ones at different depths in tissue for a monoenergetic proton beam (E=62 MeV) and for a modulated SOBP. Numerically and experimentally predicted relative biological effectiveness values are in good agreement. The calculated frequency-averaged and dose-averaged lineal energy mean values are consistent with measured data. |
| تدمد: | 1742-3406 0144-8420 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de8b2c6e270d95bb4b3ecfbef3b56ddb https://doi.org/10.1093/rpd/ncq483 |
| رقم الأكسشن: | edsair.doi.dedup.....de8b2c6e270d95bb4b3ecfbef3b56ddb |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17423406 01448420 |
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