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Ghalbzouri TE, Bardouni TE, Bakkali JE, Satti H, Arectout A, Berriban I, Nouayti A, Yerrou R. Photon-specific absorbed fraction estimates in stylized ORNL and voxelized ICRP adult male phantoms using a new developed Geant4-based code "DoseCalcs": a validation study. Radiol Phys Technol 2022; 15:323-339. [PMID: 36065049 DOI: 10.1007/s12194-022-00672-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 10/14/2022]
Abstract
When a radiotracer is injected into a patient's body as part of a nuclear medicine investigation, the entire body is exposed to the ionizing radiation emitted, which can cause biological damage. Therefore, it is important to predict the internal radiation dose to properly balance the advantages of radiological examinations. Currently, various Monte Carlo tools, such as MCNP, Geant4, and GATE, are available to estimate internal radiation dosimetry-related quantities, such as S values (S) and specific absorbed fractions (SAF). Such codes make physics easier for physicists who are experienced with computer programming; however, programming and/or simulation inputs remain a time-consuming and intensive task. In this study, we present a newly developed Geant4-based code for internal dosimetry calculations, namely "DoseCalcs". To assess the performance of the geometrical methods and computational capabilities of our developed tool, we used the GDML, TEXT, STL, and C++ methods to model the ORNL adult phantom, and a voxel-based structure to construct the ICRP adult male. SAFs in the ORNL and ICRP adult male phantoms for eight discrete mono-energetic photons with energies ranging from 0.01 to 2 MeV are calculated with DoseCalcs and compared to ORNL and OpenDose reference data. The two phantoms showed good agreement with both references, which indicates the accuracy of DoseCalcs for subsequent use in estimating internal dosimetry quantities using a variety of geometrical methods.
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Affiliation(s)
- Tarik El Ghalbzouri
- ERSN Laboratory, Physics Department, Faculty of Sciences, University Abdelmalek Essaadi, Tetouan, Morocco.
| | - Tarek El Bardouni
- ERSN Laboratory, Physics Department, Faculty of Sciences, University Abdelmalek Essaadi, Tetouan, Morocco
| | - Jaafar El Bakkali
- ERSN Laboratory, Physics Department, Faculty of Sciences, University Abdelmalek Essaadi, Tetouan, Morocco.,Nuclear Medicine Department, Military Hospital Mohammed V, Rabat, Morocco
| | - Hicham Satti
- ERSN Laboratory, Physics Department, Faculty of Sciences, University Abdelmalek Essaadi, Tetouan, Morocco
| | - Assia Arectout
- ERSN Laboratory, Physics Department, Faculty of Sciences, University Abdelmalek Essaadi, Tetouan, Morocco
| | - Iman Berriban
- ERSN Laboratory, Physics Department, Faculty of Sciences, University Abdelmalek Essaadi, Tetouan, Morocco
| | - A Nouayti
- ERSN Laboratory, Physics Department, Faculty of Sciences, University Abdelmalek Essaadi, Tetouan, Morocco
| | - Randa Yerrou
- ERSN Laboratory, Physics Department, Faculty of Sciences, University Abdelmalek Essaadi, Tetouan, Morocco
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