Absorbed Dose Assessment from Short-Lived Radionuclides of Radon (222Rn) Decay Chain in Lung Tissue: A Monte Carlo Study
Reads0
Chats0
TLDR
Evaluating the absorbed dose by lung tissue due to the exposure from short-lived radioactive products of radon (222Rn) decay using Monte Carlo simulation showed that alpha decay has more contribution to the lung absorbed dose in comparison with the beta and gamma decay.Abstract:
Introduction: Internal exposure to radon gas progeny can lead to serious biologic damages to the lung tissue. The aim of this study was to evaluate the absorbed dose by lung tissue due to the exposure from short-lived radioactive products of radon (222Rn) decay using Monte Carlo simulation. Material and Methods: A lung equivalent phantom including 64 air sacs was simulated by MCNPX code. Then, the absorbed dose from short-lived radioactive products of radon decay chain including 218Po, 214Po, 214Pb and 214Bi was calculated for both suspended and deposited states of daughter nuclides inside the lung. Results: The results showed that alpha decay has more contribution to the lung absorbed dose in comparison with the beta and gamma decay. Furthermore, the received dose by the lung was higher when the radon progenies were deposited inside the lung so that the maximum received dose to lung was 100 times higher than that of calculated in suspended state. Conclusion: Short-lived daughter radionuclides of radon decay chain, especially alpha emitter products, can be considered as dangerous internal radiation sources. The biological effects of these daughter radionuclides is more severe when are suspended inside the respiratory system.read more
Citations
More filters
Journal ArticleDOI
Radiometric evaluation of indoor radon levels with influence of building characteristics in residential homes from southwestern Nigeria
TL;DR: The investigated data would form important component of the database required to set up guidelines and policy of controlling radon at home and estimate excess lifetime cancer risks (ELCR).
Journal ArticleDOI
A Monte Carlo simulation of unmitigated risk of radon exposure from soil and groundwater around Maiganga Coal Mine, North-Eastern Nigeria
Adamu Usman Mohammed,Ahmad Zaharin Aris,Mohammad Firuz Ramli,Noorain Mohd Isa,A.S. Arabi,M. M. Orosun +5 more
Journal ArticleDOI
Assessment of Effective Dose Equivalent from Internal Exposure to 222Rn in Ramsar City
TL;DR: In this article, the average effective dose equivalents (due to both indoor and outdoor exposures) in the selected regions were 9.5±2.8, 5.1± 2.1, and 3.2±1.2 mSv/y, respectively.
Journal ArticleDOI
Determining the Absorbed Dose of Alpha Radiation due to Inhalation Radon Gas and Its Derivatives in Human Lung Using MCNPX 2.6.0 Simulation Model by Jafari et al. In Khorasan Razavi, Summer 2019
F. Mohammad Jafari,J. Bahmani +1 more
TL;DR: In this article , the absorbed energy and annual effective dose due to the emitted alpha beam of radon and derivatives on alveolar air cells of the adult lung using MCNPX 2.6.
Journal ArticleDOI
The Relationship between Radon and Geology: Sources, Transport and Indoor Accumulation
TL;DR: The relationship between radon and geology, including its origins, transmission, and accumulation, as well as its impact on human health and mitigation strategies, was examined in this article .
References
More filters
Recommendations of the international commission on radiological protection
R.M. Sievert,G. Failla +1 more
TL;DR: Recommendations are presented which represent concepts and practices evolved from recent discussions at formal and informal meetings of the Commission and its Committees.
Book
The 2007 recommendations of the International Commission on Radiological Protection
TL;DR: These revised Recommendations for a System of Radiological Protection formally replace the Commission's previous, 1990, Recommendations; and update, consolidate, and develop the additional guidance on the control of exposure from radiation sources issued since 1990.
Journal ArticleDOI
The Number of Alveoli in the Human Lung
Matthias Ochs,Jens R. Nyengaard,Anja Jung,Lars Knudsen,Marion Voigt,Thorsten Wahlers,Joachim Richter,Hans Jørgen G. Gundersen +7 more
TL;DR: A design-based stereologic approach was used for the direct and unbiased estimation of alveolar number in the human lung, based on two-dimensional topology in three-dimensional space and free of assumptions on the shape, size, or spatial orientation ofAlveoli.
Journal ArticleDOI
Human Respiratory Tract Model for Radiological Protection
TL;DR: The new respiratory tract model, which applies explicitly to workers and to all members of the general public inhaling gases, vapour or particles, permits the evaluation of dose per unit intake or exposure as well as the interpretation of bioassay data.
Journal ArticleDOI
Doses to organs and tissues from radon and its decay products.
Gerald M. Kendall,T. J. Smith +1 more
TL;DR: The doses from radon and from its short-lived decay products to a number of organs and tissues and to the foetus are discussed, to put all these doses into context rather than concentrating only on the largest contributions.
Related Papers (5)
The use of track registration detectors to reconstruct contemporary and historical airborne radon (222RN) and radon progeny concentrations for radon-lung cancer epidemiologic study
Daniel J. Steck,Field Rw +1 more