Medical Radiology and Radiation Safety. 2023. Vol. 68. № 5

DOI:10.33266/1024-6177-2023-68-5-19-27

V.V. Vostrotin

Integration of Icrp Oir Models Into the iDose 2 Dosimetry System

Southern Urals Biophysics Institute, Ozyorsk, Russia

Contact person: V.V. Vostrotin, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

Introduction: The iDose 2 dosimetry system is a tool for assessing the doses of internal irradiation of workers under the current individual dosimetry control (IDC). In this system, according to a series of measurements of the activity of radionuclides in biological objects (including those not exceeding the detection limit of the measurement technique) and information on contact times and types of compounds, estimates of the committed effective dose equivalent (CEDE) of internal irradiation, as well as their uncertainties, are made based on the Bayesian approach. It is possible to integrate practically any biokinetic models of the behavior of radionuclides in the human body, presented in the form of a system of ordinary differential equations (ODEs) with constant transition coefficients between compartments, into the iDose 2 dosimetry system without changing the source code.

Purpose: Integration of new combined biokinetic models for the list of radionuclides: H-3, Sr-90, Cs-137, Pu-238, Pu-239 and Am-241 from Publications 100, 130, 134, 137 and 141 of the ICRP (conventionally called the series Occupational Intakes of Radionuclides (OIR)), for ingestion and inhalation routes of intake with AMAD = 1 and 5 microns.

Material and methods: For each variant of the biokinetic model, the functions of retention/removal of radionuclides were found through the eigenvectors and eigenvalues of the matrix describing the ODE system.

Results: A total of 65 new biokinetic models and 180 functions of radionuclide retention/removal in the form of a sum of exponents were integrated and quality control was carried out.

Keywords: internal exposure, biokinetic model, individual dosimetry control, Occupational Intakes of Radionuclides (OIR), ICRP, dosimetry system iDose 2, integration of models

For citation: Vostrotin VV. Integration of Icrp Oir Models Into the iDose 2 Dosimetry System. Medical Radiology and Radiation Safety. 2023;68(5):19–27. (In Russian). DOI:10.33266/1024-6177-2023-68-5-19-27

 

References

1. Dosimetry Control of Occupational Internal Exposure. General Requirements. Guidelines MU 2.6.1.065-2014. Moscow Publ., 2014 (In Russ.).

2. Radiation Safety Standards (NRB-99/2009): Sanitary Rules and Regulations SanPiN 2.6.1.2523-09. Moscow Publ., 2009 (In Russ.).

3. ICRP. Publication 30. Limits for Intakes of Radionuclides by Workers. Part 1. ICRP. 1979.

4. ICRP. Publication 30. Limits for Intakes of Radionuclides by Workers. Part 2. ICRP.1980.

5. ICRP. Publication 30. Limits for Intakes of Radionuclides by Workers. Part 3. ICRP. 1981.

6. ICRP. Publication 30. Limits for Intakes of Radionuclides by Workers: An Addendum. Part 4. ICRP. 1988.

7. ICRP. Publication 54. Individual Monitoring for Intakes of Radionuclides by Workers. ICRP. 1989.

8. ICRP. Publication 66. Human Respiratory Tract Model for Radiological Protection. ICRP. Pergamon Press, 1994.

9. ICRP. Publication 67. Age-Dependent Doses to Members of the Public from Intake of Radionuclides. Ingestion Dose Coefficients. Part 2. ICRP. Pergamon Press, 1993.

10. ICRP. Publication 68. Dose Coefficients for Intakes of Radionuclides by Workers. ICRP. 1994.

11. Vostrotin V.V. Guidelines on Control Methods MUK 2.6.5.045 - 2016. Instructions on Control Methods for Determining Internal Exposure Dose for Personnel under Standard and Special Conditions. Methodology for Performing Calculations. Moscow Publ., 2016 (In Russ.).

12. Vostrotin V.V., Zhdanov A.N., Efimov A.V. Individual Dosimetry Monitoring (IDC) of Internal Exposure of Professional Workers Using the Computer Program «iDose 2» Based on the Bayesian Approach. Voprosy Radiatsionnoy Bezopasnosti = Journal of Radiation Safety Issues. 2016;2:45-54 (In Russ.).

13. Vostrotin V.V., Zhdanov A.N., Efimov A.V. Testing the System of Individual Dosimetry Monitoring (IDC) of Internal Exposure of Professional Workers During Inhalation Intake of Insoluble Plutonium Compounds Using the iDose 2 Computer Program. Voprosy Radiatsionnoy Bezopasnosti = Journal of Radiation Safety Issues. 2016;3:78-83 (In Russ.).

14. Vostrotin V.V., Zhdanov A.N., Efimov A.V. Approbation of the iDose 2 Computer Program in Relation to the Tasks of Individual Dosimetry Control (IDC) of Internal Irradiation of Personnel of FSUE PO “MAYAK” During Inhalation of Plutonium. ANRI. 2017;4:45-54 (In Russ.).

15. Vostrotin V.V., et al. A Method of Individual Dosimetric Control of Internal Irradiation of Professional Workers Using the Computer Program “iDose 2”. Patent RU 2650075 C2. 2018 (In Russ.).

16. Molokanov A.A. Method of Performing Calculations of MVR 2.6.1.60-2002. Calculation of the Expected Effective Doses of Internal Irradiation of Personnel Based on the Results of Measurements of the Activity of Radionuclides in Bioassays Using the MMK-01 Computer Program. Moscow Publ., 2005 (In Russ.).

17. Molokanov A.A. Methodology for Calculating the Effective Dose of Internal Irradiation of Personnel Based on the Results of Measurements of the Activity of Radionuclides in the Human Body and in Bioassays (Basic Version). MMK-02. Moscow, A.I. Burnazyana FMBC Publ., 2012 (In Russ.).

18. Methodological Support of the Practice of Individual Dosimetric Control of Professional Internal Irradiation of Personnel and Radiation-Hygienic Assessment of the Territory of His Residence (Final). Report on Research Work. Moscow Publ., 2018. 104 p. (In Russ.).

19. Development of Methodological Support for the Practice of Individual Dosimetric Control of Professional Internal Exposure of Personnel of Radiation Hazardous Enterprises (Final). Report on Research Work. Moscow Publ., 2019. 73 p. (In Russ.).

20. Consistent Development of the Basics and Practice of Dosimetry of Professional Internal Irradiation (Final). Report on Research Work. Moscow Publ., 2020. 136 p. (In Russ.).

21. ICRP. Publication 130. Occupational Intakes of Radionuclides. Part 1. ICRP. 2015.

22. ICRP. Publication 100. Human Alimentary Tract Model for Radiological Protection. ICRP. 2006.

23. ICRP. Publication 103. The 2007 Recommendations of the International Commission on Radiological Protection. ICRP. 2007.

24. ICRP. Publication 134. Occupational Intakes of Radionuclides. Part 2. ICRP. 2016.

25. ICRP. Publication 137. Occupational Intakes of Radionuclides. Part 3. ICRP. 2017.

26. ICRP. Publication 141. Occupational intakes of Radionuclides. Part 4. ICRP. 2019.

27. Improvement of Control Methods and Study of the Peculiarities of the Formation of Internal Radiation Doses of the Personnel of FSUE “PO “Mayak” and the Population of Adjacent Territories. Report on Research Work. Moscow Publ., 2022. 253 p. (In Russ.).

28. Development of Organizational and Methodological Support for Individual Dosimetric Control of Professional Internal Irradiation. (Final). Report on Research Work. Moscow Publ., 2013. 111 p. (In Russ.).

29. ICRP. Publication 89. Basic Anatomical and Physiological Data for Use in Radiological Protection Reference Values. ICRP. Pergamon Press, 2002.

30. ICRP. Publication 23. Report on the Task Group on Reference Man. ICRP. Pergamon Press, 1975.

31. Sokolova A.B., Efimov A.V., Dzhunushaliyev A.B. Analysis of Compliance of the Current System of Individual Dosimetric Control of Internal Irradiation Caused by Plutonium Intake with the Relevant Recommendations of the ICRP. Radiatsionnaya Gigiyena = Radiation Hygiene. 2022;15;3:50-57 (In Russ.).

 

 

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Conflict of interest. The author declares no conflict of interest.

Financing. The work was carried out within the framework of the research project “Improving control methods and studying the peculiarities of the formation of internal radiation doses of the personnel of FSUE “PO “Mayak” and the population of adjacent territories”, cipher “Luch-22”, funded by the FMBA of Russia.

Contribution. Conceptual development, creation of R scripts, mathematical calculations and their quality control were carried out by one author.

Article received: 20.04.2023. Accepted for publication: 27.05.2023.