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Chromosome Aberration Analysis in Persons Exposed to Low-level Radiation from the JCO Criticality Accident in Tokai-mura


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Title: Chromosome Aberration Analysis in Persons Exposed to Low-level Radiation from the JCO Criticality Accident in Tokai-mura
Authors: Sasaki, Masao S. / Hayata, Isamu / Kamada, Nanao / Kodama, Yoshiaki / Kodama, Seiji
Issue Date: Dec-2001
Publisher: 日本放射線影響学会
Citation: Journal of radiation research. 2001, 42(Supple), p.107-116
Abstract: Chromosome aberrations were studied in peripheral blood lymphocytes of 43 persons who were exposed to low-level radiation of mixed neutrons and γ-rays resulting from the JCO criticality accident. When the age-adjusted frequencies of dicentric and ring chromosomes were compared with the dose calibration curve established in vitro for ^<60>Co γ-rays as a reference radiation, a significant correlation was observed between the chromosomally estimated doses and the documented doses evaluated by physical means. The regression coefficient of the chromosomal doses against the documented doses, 1.47 ± 0.33, indicates that the relative biological effectiveness of fission neutrons at low doses is considerably higher than that currently adopted in the radiation protection standard.
Keywords: Criticality accident / Low-dose exposure / Chromosome aberrations / Neutron RBE / Biological dosimetry
URI: http://hdl.handle.net/10069/19095
ISSN: 04493060
Relational Links: http://ci.nii.ac.jp/naid/110002328770/
Rights: 日本放射線影響学会 / 本文データは学協会の許諾に基づきCiNiiから複製したものである
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/19095

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