Wide Scale EPR Retrospective Dosimetry: Results and Problems

Иванников, Андрей Андреевич; Skvortzov, V.G.; Stepanenko, Valeriy; Tikunov, D.D.; Fedosov, I.M.; Romanyukha, Alexander; Wieser, A.

doi:10.1093/oxfordjournals.rpd.a032049

Cited by 79 publications

(31 citation statements)

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“…Very different values of the 60 Co-equivalent dose in enamel were found: 500 Gy/mo (Ivannikov et al, 1997), 200 mGy/day (Sholom et al, 1998b) and 20 mGy/h (Jiao et al, 2007). The apparent contradiction is probably due to the different exposure geometries and sample grain size, because UV light gets completely absorbed in approximately 100-200 µm of tooth enamel (Ivannikov et al, 1997;Sholom et al, 1998b;Fattibene et al, 1998).…”

Section: Epr Response Of Tooth Enamel To Ultraviolet Radiationmentioning

confidence: 94%

“…After that, there have been a minimum of 11 and a maximum of 30 publications per year. This rise in the JCR publication rate around 1996 can be explained by the increased interest of public funding organizations in the use of tooth dosimetry as a tool for dose reconstruction in epidemiological cohorts, mainly in the studies of health effects of radiation on the Chernobyl liquidators in Ukraine, the populations of the Southern Urals in Russia, and the residents near the Semipalatinsk Nuclear Test Site in Kazakhstan Gusev et al, 1997;Ivannikov et al, 1997;Romanyukha et al, 1996a;Vorobiova et al, 1999;Wieser et al, 2000a).…”

Section: Dosimetry and The International Conference On Luminescence Amentioning

confidence: 99%

“…Several reports of the EPR response of enamel to radiation from artificial UV lamps (Ivannikov et al, 1997;Sholom et al, 1998b;Nilsson et al 2001;El Faramawy, 2005a;Jiao et al, 2007) followed these early papers. The newer papers reported the nominal energy of the UV radiation emitted by the lamps, but not the spectra.…”

Section: Epr Response Of Tooth Enamel To Ultraviolet Radiationmentioning

confidence: 99%

“…More interesting are papers that, based on the results of Liidja et al, have directly investigated the effect of solar light on tooth enamel (Ivannikov et al, 1997;Sholom et al, 1998 ;Jiao et al, 2007). Very different values of the 60 Co-equivalent dose in enamel were found: 500 Gy/mo (Ivannikov et al, 1997), 200 mGy/day (Sholom et al, 1998b) and 20 mGy/h (Jiao et al, 2007).…”

Section: Epr Response Of Tooth Enamel To Ultraviolet Radiationmentioning

confidence: 99%

“…Moreover, the magnitude of the effect depends on the UV wavelength, lamp power, exposure time and source-sample distance. For example, the layer depth affected by UV light was found to be 130 µm for 365 nm (Fattibene at al., 1998), 100 µm for 254 nm, and 280 µm for the sunlight spectrum (Ivannikov et al, 1997). Different penetration depths of the UV light imply different volumes of the sample affected and, consequently, different volumeaveraged signal intensities.…”

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confidence: 99%

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EPR dosimetry with tooth enamel: A review

Fattibene

Callens

2010

Applied Radiation and Isotopes

208

160

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When tooth enamel is exposed to ionizing radiation, radicals are formed that can be detected using Electron Paramagnetic Resonance (EPR) techniques. EPR dosimetry using tooth enamel is based on the (presumed) correlation between the intensity or amplitude of some of the radiation-induced signals with the dose absorbed in the enamel. In the present paper a critical review is given of this widely applied dosimetric method.The first part of the paper is quite fundamental and deals with the main properties of tooth enamel and several of its model systems (e.g., synthetic apatites). Considerable attention is also devoted to the numerous radiation-induced and native EPR signals, and the radicals responsible for them. The relevant EPR detection, identification and spectrum analysing methods are reviewed from a general point of view. Finally, the need for solid state modelling and the linearity of the dose response are investigated.The second part is devoted to the practical implementation of EPR dosimetry using enamel. It concerns the preparation of samples, specific irradiation problems, spectrum acquisition and it is described how the dosimetric signal intensity and dose can be retrieved from the EPR spectra. Special attention is paid to the energy dependence of the EPR response and to sources of uncertainties. Results of and problems encountered in international intercomparisons and epidemiological studies are also dealt with.In the final chapter the future of EPR dosimetry with tooth enamel is analysed.

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