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| Dose Estimation of Two Victims in a Severe Radiation Accident By Using Tooth Enamel |
| YANG Ying-jie, GAO Gang, SU Xu |
| National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088 China |
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Abstract Objective To estimate the exposed dose levels of 2 two victims, who died one month after they were accidentally irradiated by Cobalt-60.Methods Three teeth were extracted from 2 victims.The signal intensities of separated enamel samples were measured with ESR spectrometer.The accumulated exposed doses were reconstructed according to a calibration curve established using Cobalt-60 γ-rays.Results A calibration curve between signal intensity and exposed dose was established.The estimated doses of 3 teeth were 26.1~29.4Gy, for victim A, 14.9~18.3Gy and 15.2~18.5Gy for victim B.The doses are close to the result of the other Laboratory.Conclusion The application of ESR dosimetry in human tooth enamel could provide important information for a dose estimation of victims exposed to heavy doses of radiation.
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Received: 28 October 2009
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. [J]. , 2012, 21(4): 473-474. |
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