Real-time detection of fast and thermal neutrons in radiotherapy with CMOS sensors
| Autor: | Florence Taupin, Stephane Higueret, Halima Elazhar, Daniel Husson, Nicolas Arbor, Rodolphe Combe, N. Dehaynin, Philippe Meyer |
|---|---|
| Přispěvatelé: | Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Hospices Civils de Lyon (HCL), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Monte Carlo method Physics::Medical Physics Radiation [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] 030218 nuclear medicine & medical imaging Fast Neutrons 03 medical and health sciences 0302 clinical medicine Optics [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] Radiology Nuclear Medicine and imaging Neutron Radiation treatment planning Radiometry [PHYS]Physics [physics] CMOS sensor Radiological and Ultrasound Technology Radiotherapy business.industry Radiotherapy Dosage Neutron temperature CMOS Gamma Rays 030220 oncology & carcinogenesis business Monte Carlo Method Beam (structure) |
| Zdroj: | Phys.Med.Biol. Phys.Med.Biol., 2017, 62 (5), pp.1920. ⟨10.1088/1361-6560/aa5bc9⟩ |
| Popis: | International audience; The peripheral dose distribution is a growing concern for the improvement of new external radiation modalities. Secondary particles, especially photo-neutrons produced by the accelerator, irradiate the patient more than tens of centimeters away from the tumor volume. However the out-of-field dose is still not estimated accurately by the treatment planning softwares. This study demonstrates the possibility of using a specially designed CMOS sensor for fast and thermal neutron monitoring in radiotherapy. The 14 microns-thick sensitive layer and the integrated electronic chain of the CMOS are particularly suitable for real-time measurements in γ/n mixed fields. An experimental field size dependency of the fast neutron production rate, supported by Monte Carlo simulations and CR-39 data, has been observed. This dependency points out the potential benefits of a real-time monitoring of fast and thermal neutron during beam intensity modulated radiation therapies. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|