Radiation Protection Dosimetry Advance Access originally published online on July 20, 2004
Radiation Protection Dosimetry 2004 111(2):211-219; doi:10.1093/rpd/nch039
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Radiation Protection Dosimetry Vol. 111, No. 2 © Oxford University Press 2004; all rights reserved
Biological estimates of dose to inhabitants of Belarus and Ukraine following the Chernobyl accident
1 National Radiological Protection Board (NRPB), Chilton, Didcot, Oxon OX11 0RQ, UK
2 Institut de Radioprotection et de Sûrété Nucléaire (IRSN), Fontenay-aux-Roses, Paris, France
3 Kharkiv Institute of Medical Radiology (KhIMR), Kharkiv, Ukraine
4 Institute of Genetics and Cytology (IGC), Minsk, Belarus
* Corresponding author: alan.edwards{at}nrpb.org
The purpose of this paper is to investigate how well various assays on blood can detect radiation dose to people exposed many years previously and, if possible, to estimate that dose. The assays were applied to persons resident close to Chernobyl in 1986. Blood samples were taken 1315 years after the reactor accident. The assays used were the frequencies of lymphocyte chromosomal translocations, micronuclei, HPRT mutations and apoptotic cells. Translocation yields in the exposed groups were marginally higher than in their respective controls, leading to dose estimates of about 0.2 Gy but with large uncertainties. All other assays showed inconsistency from person to person or other variations apparently not related to dose. The measurement of translocations, it is concluded, is the biological method of choice for retrospective dosimetry.
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