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Radiation Protection Dosimetry Advance Access originally published online on May 15, 2006
Radiation Protection Dosimetry 2006 120(1-4):176-183; doi:10.1093/rpd/nci549
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

The Third International Intercomparison on EPR Tooth Dosimetry: part 2, final analysis

A. Wieser1,*, R. Debuyst2, P. Fattibene3, A. Meghzifene4, S. Onori3, S. N. Bayankin5, A. Brik6, A. Bugay7, V. Chumak8, B. Ciesielski9, M. Hoshi10, H. Imata11, A. Ivannikov12, D. Ivanov5, M. Junczewska13, C. Miyazawa10, M. Penkowski9, S. Pivovarov14, A. Romanyukha15, L. Romanyukha15, D. Schauer15, O. Scherbina6, K. Schultka9, S. Sholom8, V. Skvortsov12, V. Stepanenko12, J. A. Thomas15, E. Tielewuhan16, S. Toyoda16 and F. Trompier17

1 Institute of Radiation Protection, GSF–National Research Centre for Environment and Health, D-85758 Neuherberg, Germany
2 Laboratory of Biomedical Magnetic Resonance, Universite catholique de Louvain, UCL, Avenue Hippocrate 10, B-1200 Brussels, Belgium
3 Department of Technology and Health, ISS - Istituto Superiore di Sanità, and INFN - Istituto Nazionale di Fisica Nucleare Roma 1, I-00161, Rome, Italy
4 Dosimetry and Medical Radiation Physics Section, IAEA, Wagramer Strasse 5, A-1400 Vienna, Austria
5 EPR Spectroscopy Centre, Institute of Metal Physics of Ural Division of RAS, 18 Kovalevska Street, Ekaterinburg 620219, Russia
6 Department of Radio Frequency Spectroscopy of Mineral Matter, IGMO, National Academy of Sciences of Ukraine, Palladina prospect 34, Kiev 03680, Ukraine
7 Laboratory of ESR Dosimetry, Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Prospect Nauki 45, 252650 Kiev, Ukraine
8 Laboratory of External Exposure Dosimetry, Scientific Center for Radiation Medicine, Melnikov Strasse 53, 04050 Kiev, Ukraine
9 Department of Physics and Biophysics, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland
10 Department of Dentistry, Ohu University, 31-1 Sankakudo, Koriyama, Fukushima 963-8041, Japan
11 Department of Applied Physics, Okayama University of Science, 1-1 Ridai, Okayama 700-0005, Japan
12 Medical Radiological Research Centre of RAMS, Korolev strasse 4, 249020 Obninsk, Russia
13 Clinic of Oral Surgery, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland
14 Institute of Nuclear Physics of National Nuclear Center of Kazakhstan Republic, Almaty 82, 480082, Kazakhstan
15 Department of Radiology and Radiological Sciences, USUHS, 4301 Jones Bridge Road, Bethesda, MD 20814-4799, USA
16 Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
17 Institut de Radioprotection et de Sûreté Nucléaire, BP 17, F-92262 Fontenay-aux-Roses, France

* Corresponding author: wieser{at}gsf.de

The objective of the Third International Intercomparison on EPR Tooth Dosimetry was to evaluate laboratories performing tooth enamel dosimetry <300 mGy. Final analysis of results included a correlation analysis between features of laboratory dose reconstruction protocols and dosimetry performance. Applicability of electron paramagnetic resonance (EPR) tooth dosimetry at low dose was shown at two applied dose levels of 79 and 176 mGy. Most (9 of 12) laboratories reported the dose to be within 50 mGy of the delivered dose of 79 mGy, and 10 of 12 laboratories reported the dose to be within 100 mGy of the delivered dose of 176 mGy. At the high-dose tested (704 mGy) agreement within 25% of the delivered dose was found in 10 laboratories. Features of EPR dose reconstruction protocols that affect dosimetry performance were found to be magnetic field modulation amplitude in EPR spectrum recording, EPR signal model in spectrum deconvolution and duration of latency period for tooth enamel samples after preparation.


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V. Chumak, B. Ciesielski, S. Sholom, and K. Schultka
Lessons of the 3rd international intercomparison on EPR dosimetry with teeth: similarities and differences of two successful techniques
Radiat Prot Dosimetry, September 1, 2006; 120(1-4): 197 - 201.
[Abstract] [Full Text] [PDF]


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