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Estimation of effective doses to patients during dental X-ray examinations

UDC 539.122.04:614.8.086.52
Authors Makarevich Kristina Olegovna
Minenko Viktor Fedorovich, PhD in Biological Sciences, Associate Professor
Kuten' Semen Adamovich, PhD in Physico-Mathematical Sciences, Researcher
Verenich Kirill Aleksandrovich
Abstract Purpose.The paper is devoted to estimating radiation doses to patients from dental X-ray examinations.
Methods. The Monte Carlo method was used to simulate the radiation transport within the ICRP reference human phantoms and estimate the energy deposition in organs and tissues.
Findings. The model of dental X-ray unit was developed. The ICRP voxel phantoms were adapted for modeling dental X-ray examinations taking into account the rules of exposure (the tangent rule and the bisector rule). The absorbed dose distributions within organs and tissues were obtained with the help of the Monte Carlo method. Radiation doses to organs and tissues were calculated. The conversion coefficients Ke were derived from these data.
Application field of research. The results obtained can be used for preparing the guidelines for medical establishments or as a basement for developing the software for estimating radiation doses to patients during different X-ray examinations.
Conclusions. The values of the conversion coefficients which link the effective dose values with the X-ray tube parameters and the type of the examination were determined. The possibility of their practical application was shown.
Keywords X-ray radiation, Monte Carlo method, voxel phantoms, radiation doses, dental X-ray examinations, TASMIP
  References
1. Sources and effects of ionizing radiation. UNSCEAR 2008. Report to the General Assembly with Scientific Annexes. United Nations Publication, 2010. Vol.1. 220 p..
2. The 2007 Recommendations of the International Commission on Radiological Protection. ICRP Publication 103. Ann. ICRP 37 (2-4). Pergamon Press, 2007. 332 p..
3. Kishkovskij A.N., Tjutin L.A., Esinovskaja G.N. Atlas of sets for X-ray studies. Leningrad: Medicina, 1987. 520 p. (rus).
4. Boone J.M., Seibert J.A. An accurate method for computer-generating tungsten anode X-ray spectra from 30 to 140 keV. Med.Phys. 1997. Vol. 24, No. 1. Pp. 1661-1670..
5. Ay M.R., Shahriari M., Sakrar S., Adib M., Zaidi H. Monte Carlo simulation of X-ray spectra in diagnostic radiology and mammography using MCNP4C. Phys.Med.Biol. 2004. No.49. Pp. 4897-4917..
6. Vasil’ev A.Ju., Vorob’ev Ju.I., Truten’ V.P. Radiodiagnosis in dentistry: monograph. Мoscow: Medika, 2007. 496 p. (rus).
7. Adult Reference Computational Phantoms. ICRP Publication 110. Ann. ICRP. International Commission on Radiological Protection. 2009. 165 p..
8. Basic Anatomical and Physiological Data for Use in Radiological Protection: Reference Values. ICRP Publication 89. Ann. ICRP. International Commission on Radiological Protection. Pergamon Press, 2002. 265 p..
9. Makarevich K.O., Minenko V.F., Verenich K.A., Kuten S.A. Using the Monte Carlo method for assessing the tissue and organ doses to patients in dental radiography. Physics of Particles and Nuclei Letters. 2016. Vol. 13. No. 3. Pp. 406-415..
10. Control of effective radiation doses to patients during medical X-ray examinations: Methodological guidelines. MU 2.6.1.2944-11. Approved Chap. State San. Doctor of the Russian Federation G.G. Onishhenko on July 19, 2011. (rus).
11. Conversion Coefficients for Use in Radiological Protection. International Commission on Radiation Units and Measurements. ICRU Repost 60. 2001..