Dose Assessments by Cytogenetic Analysis in the Goiania (Brazil) Radiation Accident

Abstract

During the recent Goianian radiation accident, 97 exposed or potentially exposed individuals were analysed for the frequencies of chromosomal aberrations (dicentrics and rings) in their lymphocytes, for estimation of the absorbed radiation dose. Of these, 29 subjects had dose estimates exceeding 0.5 Gy, 21 exceeded 1.0 Gy and 8 exceeded 4.0 Gy. None of the estimates exceeded 7.0 Gy.