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| Analysis of national assessment results of biological dose estimation ability in 2017 |
| JIANG Hong, ZHANG Chengsi, LONG Gaoqun |
| Guizhou Center for Disease Control and Prevention, Guiyang 550004 China |
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Abstract Objective Through the summary and analysis of the national assessment of biological dose estimation ability in 2017, the professional and technical ability of this work was improved.Methods According to the "Assessment Program of Biological Dose Estimation Ability in 2017", the unstable chromosome aberrations were cultured, produced and analyzed after irradiation. And the number of unstable chromosome aberrations (dic+r) was counted. The dose was estimated by using the curve Y=7.3512×10-3+3.4037×10-2D+8.0398×10-2 D2 in the national standard.Results The average of sample 05~1 is 3.62 Gy, the 95% confidence interval is (3.32~3.90)Gy, and the relative deviation is 0.56%. The average of sample 05~2 is 2.37 Gy, the 95% confidence interval is (2.19~2.54)Gy, the relative deviation is 7.73%, and the relative deviation of both samples is less than 20%. It is concluded that the estimated results of biological dose ability in our laboratory are qualified.Conclusion The laboratory can meet the needs of biological dose work, but it still needs to strengthen quality control, standardize operation, constantly summarize and analyze, establish the biological dose curve of the laboratory, reduce systematic errors, make the results more accurate and reliable, and provide scientific basis for clinical treatment and supervision and management of nuclear and radiation accidents.
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Received: 05 October 2018
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