Factors Affecting the Quality of Tooth Enamel for<i>In Vivo</i>EPR-Based Retrospective Biodosimetry

Desmet, Céline; Lévêque, Philippe; Gallez, Bernard

doi:10.1093/rpd/ncw212

Cited by 5 publications

(2 citation statements)

References 40 publications

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“…Measurements on volunteer patients who had not undergone irradiation and patients that had undergone total body irradiation treatments have produced encouraging results and development of this approach continues. Possible confounding factors like EPR signals caused by tooth restorations or whitening treatments still have to be tested (Desmet et al, 2016).…”

Section: In Vivo Dosimetrymentioning

confidence: 99%

Retrospective and emergency dosimetry in response to radiological incidents and nuclear mass-casualty events: A review

Bailiff

Sholom

McKeever

2016

Radiation Measurements

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Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. HIGHLIGHTSReview of the use of luminescence and electron paramagnetic resonance in retrospective and emergency dosimetry.Optically stimulated luminescence (OSL), thermoluminescence (TL) and Electron Paramagnetic Resonance (EPR) results on biological and physical materials.Descriptions of use in emergency and retrospective dosimetry, following large-scale radiological events.http://www.sciencedirect.com/science/article/pii/S1350448716302359 ABSTRACTThis paper reviews recent research on the application of the physical dosimetry techniques of electron paramagnetic resonance (EPR) and luminescence (optically stimulated luminescence, OSL, and thermoluminescence, TL) to determine radiation dose following catastrophic, large-scale radiological events. Such data are used in dose reconstruction to obtain estimates of dose due to the exposure to external sources of radiation, primarily gamma radiation, by individual members of the public and by populations. The EPR and luminescence techniques have been applied to a wide range of radiological studies, including nuclear bomb detonation (e.g., Hiroshima and Nagasaki) nuclear power plant accidents (e.g., Chernobyl), radioactive pollution (e.g., Mayak plutonium facility), and in the future could include terrorist events involving the dispersal of radioactive materials. In this review we examine the application of these techniques in 'emergency' and 'retrospective' modes of operation that are conducted on two distinct timescales. For emergency dosimetry immediate action to evaluate dose to individuals following radiation exposure is required to assess deterministic biological effects and to enable rapid medical triage. Retrospective dosimetry, on the other hand, contributes to the reconstruction of doses to populations and individuals following external exposure, and contributes to the long-term study of stochastic processes and the consequential epidemiological effects. Although internal exposure, via ingestion of radionuclides for example, can be a potentially significant contributor to dose, this review is confined to those dose components arising from exposure to external radiation, which in most studies is gamma radiation.The nascent emergency dosimetry measurement techniques aim to perform direct dose evaluations for individuals who, as members of the public, are most unlikely to be carrying a dosimeter issued for radiation monitoring purposes in the event of a radiation incident. Hence attention has focused on b...

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Section: In Vivo Dosimetrymentioning

confidence: 99%

Retrospective and emergency dosimetry in response to radiological incidents and nuclear mass-casualty events: A review

Bailiff

Sholom

McKeever

2016

Radiation Measurements

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“…Radiation-induced signals ( RIS s) can be significantly influenced by the position and geometry of the tooth when using an L-band EPR spectrometer (Demidenko et al 2007; Williams et al 2010; Rychert et al 2015; Desmet et al 2016; Umakoshi et al 2017; Fattibene et al 2023). Even with meticulous care in tooth positioning, the geometry can affect the measured RIS (mRIS) .…”

Section: Introductionmentioning

confidence: 99%

Enhancing Precision in L-band Electron Paramagnetic Resonance Tooth Dosimetry: Incorporating Digital Image Processing and Radiation Therapy Plans for Geometric Correction

Park,

Koo,

et al. 2023

Health Physics

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Following unforeseen exposure to radiation, quick dose determination is essential to prioritize potential patients that require immediate medical care. L-band electron paramagnetic resonance tooth dosimetry can be efficiently used for rapid triage as this poses no harm to the human incisor, although geometric variations among human teeth may hinder accurate dose estimation. Consequently, we propose a practical geometric correction method using a mobile phone camera. Donated human incisors were irradiated with calibrated 6-MV photon beam irradiation, and dose-response curves were developed by irradiation with a predetermined dose using custom-made poly(methyl methacrylate) slab phantoms. Three radiation treatment plans for incisors were selected and altered to suit the head phantom. The mean doses on tooth structures were calculated using a commercial treatment planning system, and the electron paramagnetic resonance signals of the incisors were measured. The enamel area was computed from camera-acquired tooth images. The relative standard uncertainty was rigorously estimated both with and without geometric correction. The effects on the electron paramagnetic resonance signal caused by axial and rotational movements of tooth samples were evaluated through finite element analysis. The mean absolute deviations of mean doses both with and without geometric correction showed marginal improvement. The average relative differences without and with geometric correction significantly decreased from 21.0% to 16.8% (p = 0.01). The geometric correction method shows potential in improving dose precision measurement with minimal delay. Furthermore, our findings demonstrated the viability of using treatment planning system doses in dose estimation for L-band electron paramagnetic resonance tooth dosimetry.

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A normalization method of the volume and geometry of tooth for X-band in vivo EPR dosimetry

Zou

Guo

et al. 2019

Applied Radiation and Isotopes

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Factors Affecting the Quality of Tooth Enamel forIn VivoEPR-Based Retrospective Biodosimetry

Cited by 5 publications

References 40 publications

Retrospective and emergency dosimetry in response to radiological incidents and nuclear mass-casualty events: A review

Retrospective and emergency dosimetry in response to radiological incidents and nuclear mass-casualty events: A review

Enhancing Precision in L-band Electron Paramagnetic Resonance Tooth Dosimetry: Incorporating Digital Image Processing and Radiation Therapy Plans for Geometric Correction

A normalization method of the volume and geometry of tooth for X-band in vivo EPR dosimetry

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