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Assessment of Geant4 Prompt-Gamma Emission Yields in the Context of Proton Therapy Monitoring
- Source :
- Frontiers in Oncology, Frontiers in Oncology, 2016, 6 (10), ⟨10.3389/fonc.2016.00010⟩, Frontiers in Oncology, Frontiers, 2016, 6 (10), ⟨10.3389/fonc.2016.00010⟩, Frontiers in Oncology, Vol 6 (2016)
- Publication Year :
- 2016
- Publisher :
- Frontiers Media S.A., 2016.
-
Abstract
- International audience; Monte Carlo tools have been long used to assist the research and development of solutions for proton therapy monitoring. The present work focuses on the prompt-gamma emission yields by comparing experimental data with the outcomes of the current version of Geant4 using all applicable proton inelastic models. For the case in study and using the binary cascade model, it was found that Geant4 overestimates the prompt-gamma emission yields by 40.2 ± 0.3%, even though it predicts the prompt-gamma profile length of the experimental profile accurately. In addition, the default implementations of all proton inelastic models show an overestimation in the number of prompt gammas emitted. Finally, a set of built-in options and physically sound Geant4 source code changes have been tested in order to try to improve the discrepancy observed. A satisfactory agreement was found when using the QMD model with a wave packet width equal to 1.3 fm 2 .
- Subjects :
- Cancer Research
medicine.medical_specialty
Proton
medicine.medical_treatment
Astrophysics::High Energy Astrophysical Phenomena
Monte Carlo method
Binary number
Geant4
Context (language use)
lcsh:RC254-282
030218 nuclear medicine & medical imaging
in-beam monitoring
03 medical and health sciences
0302 clinical medicine
hadrontherapy
prompt gammas
medicine
proton therapy
Medical physics
[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
Proton therapy
Original Research
Physics
Particle therapy
[PHYS.PHYS.PHYS-MED-PH] Physics [physics]/Physics [physics]/Medical Physics [physics.med-ph]
monte carlo
online monitoring
nuclear fragmentation models
Gamma ray
lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens
Computational physics
particle therapy
Oncology
Cascade
[PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
030220 oncology & carcinogenesis
[PHYS.PHYS.PHYS-MED-PH]Physics [physics]/Physics [physics]/Medical Physics [physics.med-ph]
collimated camera
Subjects
Details
- Language :
- English
- ISSN :
- 2234943X
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Frontiers in Oncology
- Accession number :
- edsair.doi.dedup.....5df5473b6fb5f15cf814e2c019a18350