ESR DOSIMETRY OF A DECEASED RADIATION WORKER

A case of overexposure of an industrial radiographer using Ir-192 sour ces and having a filmbadge dosimeter record of 104 mSv has been examin ed with ESR dosimetry bf postmortem tooth and bone specimens. ESR meas urements of the tooth enamel showed an intense signal of CO2- and gave the equivalent dose (ED) of 14 Gy by the additive dose method using g amma-rays from a source of Co-60. The doses for a finger bone and hume rus were 14.7 and 7.0 Gy, respectively. It was concluded that he had b een exposed to radiation repeatedly over 10 yr and that ESR dosimetry can give a life-long cumulative dose for personnel using radiation. Co pyright (C) 1996 Elsevier Science Ltd