A new Monte Carlo tool for organ dose estimation in computed tomography
| Autor: | Camille Adrien, Jean-Marc Bordy, S. Dreuil, Cindy Le Loirec |
|---|---|
| Přispěvatelé: | Laboratoire Modélisation et Simulation de Systèmes (LM2S), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Physique médicale, Département de radiothérapie [Gustave Roussy], Institut Gustave Roussy (IGR)-Institut Gustave Roussy (IGR), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
point dose
Ionizing radiation Computer science Health Toxicology and Mutagenesis anthropomorphic phantom relative dose map tomography [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] Imaging phantom Modelling 030218 nuclear medicine & medical imaging Dose measurement X-ray source 03 medical and health sciences 0302 clinical medicine Dosimetry Medical imaging optically stimulated luminescence dosimeter (OSLD) Safety Risk Reliability and Quality organ dose Waste Management and Disposal Monte Carlo Monte Carlo simulation Dosimeter Radiotherapy Renewable Energy Sustainability and the Environment business.industry Public Health Environmental and Occupational Health Particle transport computed tomography Collective dose Pencil (optics) dose index Radioactivity Nuclear Energy and Engineering 030220 oncology & carcinogenesis CT imaging [PHYS.PHYS.PHYS-MED-PH]Physics [physics]/Physics [physics]/Medical Physics [physics.med-ph] Tomography Radiation protection Nuclear medicine business Simulation |
| Zdroj: | Radioprotection Radioprotection, In press, 55 (2), pp.123-134. ⟨10.1051/radiopro/2020006⟩ Radioprotection, EDP Sciences, In press, 55 (2), pp.123-134. ⟨10.1051/radiopro/2020006⟩ |
| ISSN: | 0033-8451 1769-700X |
| Popis: | International audience; The constant increase of computed tomography (CT) exams and their major contribution to the collective dose led to international concerns regarding patient dose in CT imaging. Efforts were made to manage radiation dose in CT, mostly with the use of the CT dose index (CTDI). However CTDI does not give access to organ dose information, while Monte Carlo (MC) simulation can provide it if detailed information of the patient anatomy and the source are available. In this work, the X-ray source and the geometry of the GE VCT Lightspeed 64 were modelled, based both on the manufacturer technical note and some experimental data. Simulated dose values were compared with measurements performed in homogeneous conditions with a pencil chamber and then in CIRS ATOM anthropomorphic phantom using both optically stimulated luminescence dosimeters (OSLD) for point doses and XR-QA Gafchromic® films for relative dose maps. Organ doses were ultimately estimated in the ICRP 110 numerical female phantom and compared to data reported in the literature. Comparison of measured and simulated values show that our tool can be used for a patient specific and organ dose oriented radiation protection tool in CT medical imaging. |
| Databáze: | OpenAIRE |
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