Application of Geant4-DNA for simulating water radiolysis induced by Auger electron-emitting radionuclides
Open Access
- 25 January 2023
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Radiation Research
- Vol. 64 (2), 369-378
- https://doi.org/10.1093/jrr/rrac105
Abstract
Auger-emitting radionuclides have potential application in targeted radiotherapy, particularly for metastatic cancers. This possibility, especially, is stemmed from their characteristic short-range (a few μm) in biological systems allowing localization of high dose within small tumours. To explore this potential application, a Geant4 Monte Carlo toolkit has been employed to simulate the energy deposition of different radionuclides in a water model. The Geant4 Monte Carlo toolkit has model packages to simulate the interaction of radiation with matter and with diverse applications such as studies in science and medicine. In this study, the Geant4-DNA package was used to simulate the radiolytic yields induced by some Auger electron-emitting (AE) radionuclides including; I-131, I-125 and Pd-103, In-111, Ru-97 and Rh-103 m in water model. The results showed that the transient yield of the radiolytic species is characterized by the kinetic energies of the emitted electrons. It was observed that almost all the radionuclides, except I-131, deposited more energy in their proximity thereby inducing a high density of spurs to interact in a short time. It is, therefore, important to consider the kinetic energies of the emitted particles in choosing a radionuclide for specified targeted radiotherapy. This means that apart from their toxicity, compatibility with chelator and carrier molecules, and method of production, we can predict radionuclides such as In-111, Ru-97, Pb-103 m and I-125 could be relevant for targeted radiotherapy for the treatment of metastasis lesions, or tiny tumours at the cellular level, and tumours after surgical resection.Keywords
Funding Information
- ORANO
This publication has 47 references indexed in Scilit:
- Time-Dependent Radiolytic Yield of OH• Radical Studied by Picosecond Pulse RadiolysisThe Journal of Physical Chemistry A, 2011
- Targeted Radionuclide TherapyCancers, 2011
- Track structures, DNA targets and radiation effects in the biophysical Monte Carlo simulation code PARTRACMutation research. Reviews in mutation research, 2011
- Comparison of GEANT4 very low energy cross section models with experimental data in waterMedical Physics, 2010
- Radiation chemistry comes before radiation biologyInternational Journal of Radiation Biology, 2009
- Cross-fire doses from β-emitting radionuclides in targeted radiotherapy. A theoretical study based on experimentally measured tumor characteristicsPhysics in Medicine & Biology, 2008
- Theoretical estimation of the ionization potential of water in condensed phase. II. Superficial water layersProtection of Metals, 2007
- Low-energy Electron Emitters for Targeted Radiotherapy of Small TumoursActa Oncologica, 2001
- A new estimate of theChemical Physics Letters, 2000
- Femtosecond spectroscopy of an encounter pair radical (H3O+.cntdot..cntdot..cntdot.e-)hyd in concentrated aqueous solutionJournal of the American Chemical Society, 1990