RADIATION & RISK
Bulletin of the National Radiation and Epidemiological Registry
since 1992
About the Journal : 2013 : vol. 22, No. 4 : Estimation of the dose based on EPR spectroscopy of tooth enamel and dentin samples at mixed gamma-neutron irradiation in a head phantom

Estimation of the dose based on EPR spectroscopy of tooth enamel and dentin samples at mixed gamma-neutron irradiation in a head phantom

«Radiation and Risk», 2013, vol. 22, No. 4, pp.30-36

Authors

Khailov A.M. – Senior Researcher, C. Sc., Biol., Medical Radiological Research Center of the Russian Ministry of Health, Obninsk. Contacts: 4 Korolyov str., Obninsk, Kaluga region, Russia, 249036. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. .
Ivannikov A.I. – Leading Researcher, C. Sc., Phys.-Math., Medical Radiological Research Center of the Russian Ministry of Health, Obninsk.
Skvortsov V.G.– Head of Lab., C. Sc., Biol., Medical Radiological Research Center of the Russian Ministry of Health, Obninsk.

Abstract

An in vivo exposure of whole tooth as well as the dentin and enamel grain samples placed in a head phantom made of tissue-equivalent material (paraffin) was conducted. Enamel and dentine relative sensitivity was in a good agreement with values, estimated earlier for in air irradiation. The assessments of neutron and gamma-components of the total dose using ER spectroscopy of dentin and enamel samples agreed within the errors with the calculated (by Monte- Carlo method) and measured doses. Thus, the principal possibility to estimate the dose of mixed gamma-neutron radiation using EPR spectroscopy of tooth enamel and dentin samples was shown when the dose of each component of the field is initially unknown.

Key words
Tooth dentin, neutron radiation, EPR spectroscopy.

References

1. Briesmeister J.F. MCNP – A general Monte Carlo N-particle transport code. Version 4C. Report LA-13709-M. Los Alamos National Laboratory, Los Alamos, 2000.
2. International Commission on Radiation Unit. Neutron dosimetry for biology and medicine. ICRU Report 26. Bethesda, MD: ICRU, 1977.
3. Ivannikov A.I., Skvortsov V.G., Stepanenko V.F. et al. Tooth enamel EPR dosimetry: sources of errors and their correction Appl. Radiat. Isotopes. 2000. V. 52, N 5. pp. 1291-1296.
4. Ivannikov A.I., Trompier F., Gaillard-Lecanu E. et al. Optimisation of Recording Conditions for the EPR Signal Used in Dental Enamel Dosimetry Radiat. Prot. Dosim. 2002. V. 101, N 1-4. pp. 531-538.
5. Khailov A., Ivannikov A., Skvortsov V. et al. The neutron dose conversion coefficients calculation in human tooth enamel in an anthropomorphic phantom Health Phys. 2010. V. 98, N 2. pp. 369-377.
6. Khailov A., Ivannikov A., Tikunov D. et al. Tooth enamel EPR dosimetry of neutrons: Enhancement of the apparent sensitivity at irradiation in the human head phantom Radiat. Meas. 2007. V. 42, N 6-7, pp. 1171-1177.
7. Tikunov D., Trompier F., Ivannikov A. et al. Relative Sensitivity of Tooth Enamel to Fission Neutrons: Effect of Secondary Protons Radiat. Meas. 2005. V. 39, N 5. pp. 509-514.
8. Trompier F., Fattibene P., Tikunov D. et al. EPR dosimetry in a mixed neutron and gamma radiation field Radiat. Prot. Dosim. 2004. V. 110, N 1-4. pp. 437-442.
9. Trompier F., Tikunov D., Ivannikov A., Clairand I. ESR investigation of joint use of dentin and tooth enamel to estimate photon and neutron dose components of a mixed field Radiat. Prot. Dosim. 2006. V. 120, N 1-4. pp. 191-196.

Full-text article (in Russian)