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Your search keyword '"E D Kleschenko"' showing total 2 results
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2 results on '"E D Kleschenko"'

1. The second international intercomparison on EPR tooth dosimetry

Author

Octavian G. Duliu, N. Nakamura, A. A. Bugai, V.G. Skvortsov, V.F. Stepanenko, Edwin H. Haskell, Sandro Onori, Paola Fattibene, V. Kirillov, E D Kleschenko, Sami Amira, A.B. Brik, Albrecht Wieser, Alexander Ivannikov, J. Nowak, S. Bercea, Alexander Romanyukha, E.A. Ignatiev, Shin Toyoda, Alexander I. Shames, B. Pass, M. Nather, Robert B. Hayes, D. Aragno, O. Scherbina, Kishor Mehta, S. Pivovarov, Freddy Callens, D.D. Tikounov, Bartlomiej Ciesielski, René Debuyst, S. Dubovsky, Vadim V. Chumak, and Sergey Sholom

Subjects
Radiation, Materials science, Enamel paint, business.industry, Tooth enamel, law.invention, medicine.anatomical_structure, stomatognathic system, law, visual_art, Absorbed dose, visual_art.visual_art_medium, medicine, Epr dosimetry, Dosimetry, Electron paramagnetic resonance, Nuclear medicine, business, Instrumentation
Abstract

Eighteen international EPR laboratories participated in the second intercomparison programme. Each participant had to prepare enamel samples and evaluate the absorbed dose from molars that were irradiated in vitro in the range 0-1000 mGy. The objective of the programme was to bring together all methods which are currently applied by different laboratories for EPR dose reconstruction and to demonstrate the present state of dosimetry. An overview of the essential features of the different methods is presented. The current accuracy of EPR tooth enamel dosimetry under defined conditions of irradiation is evaluated. (C) 2000 Elsevier Science Ltd. All rights reserved.

Published
2000
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2. EPR dose reconstruction for Russian nuclear workers

Author

I B Keirim-Markus, Albrecht Wieser, Nori Nakamura, E.A. Ignatiev, Alexander Romanyukha, C. Miyazawa, E.K. Vasilenko, E.G. Drozhko, Peter Jacob, and E D Kleschenko

Subjects
Epidemiology, Chemistry, business.industry, Health, Toxicology and Mutagenesis, Electron Spin Resonance Spectroscopy, Radiation Dosage, Mean difference, law.invention, Radiation exposure, Paired samples, law, Occupational Exposure, Dosimetry, Humans, Radiology, Nuclear Medicine and imaging, Occupational exposure, Nuclear medicine, business, Electron paramagnetic resonance, Gamma irradiation
Abstract

The present paper describes results of the first independent evaluation of the accuracy of the dose-reconstruction technique by electron paramagnetic resonance using tooth enamel. Each of twenty-four teeth donated by Mayak nuclear workers with known occupational radiation exposure histories was cut into two parts so that each tooth could be shared for blind electron paramagnetic resonance examination by at least two of the four laboratories participating in the study. The mean difference (+/- SD) between electron paramagnetic resonance estimates of the paired samples of each tooth shared by the two laboratories in best agreement was 0.02 +/- 0.15 Gy. Mayak workers can be classified into two groups: modern workers (after 1961) having reliable official dose information and earlier nuclear workers whose dose information is less reliable because they were exposed mainly before 1961. Film badges did not contain filters until 1954. Doses in this earlier group are much higher (up to 5 Gy). Comparison of the electron paramagnetic resonance results with tooth doses calculated from official film-badge doses showed a close agreement for the first group, whereas in the second group, official doses appeared to be slightly higher than the electron paramagnetic resonance doses. The results suggested a possibility that the official doses were somewhat overestimated among the high-dose-exposed workers. Consequently, cancer risks derived from this high-dose group might tend to be slightly underestimated.

Published
1999

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