title: The 3rd international intercomparison on EPR tooth dosimetry: Part 1, general analysis.
abstract: The objective of the 3rd International Intercomparison on Electron Paramagnetic Resonance (EPR) Tooth Dosimetry was the evaluation of laboratories performing tooth enamel dosimetry below 300 mGy. Participants had to reconstruct the absorbed dose in tooth enamel from 11 molars, which were cut into two halves. One half of each tooth was irradiated in a 60Co beam to doses in the ranges of 30-100 mGy (5 samples), 100-300 mGy (5 samples), and 300-900 mGy (1 sample). Fourteen international laboratories participated in this intercomparison programme. A first analysis of the results and an overview of the essential features of methods applied in different laboratories are presented. The relative standard deviation of results of all methods was better than 27% for applied doses in the range of 79-704 mGy. In the analysis of the unirradiated tooth halves 8% of the samples were identified as outliers with additional absorbed dose above background dose.
authors.affiliation: GSF-National Research Centre for Environment and Health, Institute of Radiation Protection, Postfach 1129, D-85758 Neuherberg, Germany. wieser@gsf.de
authors.forename: A
authors.initials: A
authors.lastname: Wieser
authors.forename: R
authors.initials: R
authors.lastname: Debuyst
authors.forename: P
authors.initials: P
authors.lastname: Fattibene
authors.forename: A
authors.initials: A
authors.lastname: Meghzifene
authors.forename: S
authors.initials: S
authors.lastname: Onori
authors.forename: S N
authors.initials: SN
authors.lastname: Bayankin
authors.forename: B
authors.initials: B
authors.lastname: Blackwell
authors.forename: A
authors.initials: A
authors.lastname: Brik
authors.forename: A
authors.initials: A
authors.lastname: Bugay
authors.forename: V
authors.initials: V
authors.lastname: Chumak
authors.forename: B
authors.initials: B
authors.lastname: Ciesielski
authors.forename: M
authors.initials: M
authors.lastname: Hoshi
authors.forename: H
authors.initials: H
authors.lastname: Imata
authors.forename: A
authors.initials: A
authors.lastname: Ivannikov
authors.forename: D
authors.initials: D
authors.lastname: Ivanov
authors.forename: M
authors.initials: M
authors.lastname: Junczewska
authors.forename: C
authors.initials: C
authors.lastname: Miyazawa
authors.forename: B
authors.initials: B
authors.lastname: Pass
authors.forename: M
authors.initials: M
authors.lastname: Penkowski
authors.forename: S
authors.initials: S
authors.lastname: Pivovarov
authors.forename: A
authors.initials: A
authors.lastname: Romanyukha
authors.forename: L
authors.initials: L
authors.lastname: Romanyukha
authors.forename: D
authors.initials: D
authors.lastname: Schauer
authors.forename: O
authors.initials: O
authors.lastname: Scherbina
authors.forename: K
authors.initials: K
authors.lastname: Schultka
authors.forename: A
authors.initials: A
authors.lastname: Shames
authors.forename: S
authors.initials: S
authors.lastname: Sholom
authors.forename: A
authors.initials: A
authors.lastname: Skinner
authors.forename: V
authors.initials: V
authors.lastname: Skvortsov
authors.forename: V
authors.initials: V
authors.lastname: Stepanenko
authors.forename: E
authors.initials: E
authors.lastname: Tielewuhan
authors.forename: S
authors.initials: S
authors.lastname: Toyoda
authors.forename: F
authors.initials: F
authors.lastname: Trompier
mesh_terms: D019985:Benchmarking / Q000379:methods; D001822:Body Burden; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods* / Q000592:standards*; D006801:Humans; D066298:In Vitro Techniques; D038622:Internationality; D011785:Quality Assurance, Health Care / Q000379:methods / Q000592:standards; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods* / Q000592:standards*; D012015:Reference Standards; D012062:Relative Biological Effectiveness; D015203:Reproducibility of Results; D012189:Retrospective Studies; D018570:Risk Assessment / Q000379:methods / Q000592:standards; D012680:Sensitivity and Specificity; D014070:Tooth / Q000737:chemistry* / Q000528:radiation effects*