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Possible discrepancies between dicentric chromosome frequencies and recorded ionizing radiation doses: in vivo study
D Kubelka1, V Garaj-Vrhovac, A Hebrang
1Institute for Medical Research and Occupational Health, Zagreb, Ksaverska c 2, Croatia. dragan.kubelka@hzzz.hr
Background:
The available data on the effects of radiation on humans are limited to the reports of accidental exposure or studies of patients under diagnostic and therapeutic treatment; few reports refer to a occupationally exposed population groups.
Methods:
The research was conducted on 66 subjects employed in the Department of Nuclear Medicine and 41 nonemployed controls. For each of them chromosomal analysis and gamma-spectrometer analysis of 24-hour urine were carried out. Exposure doses were measured using film-badge dosimetry.
Results:
The comparison of dosimetric data obtained by film-badge measurements and the frequency of dicentric chromosomes in each subject revealed no correlation between the two observed parameters.
Conclusions:
In view of the above results, the subjects should be studied within job/task groups as they are far more likely to receive comparable doses.