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ORIGINAL ARTICLE
Year : 2016  |  Volume : 7  |  Issue : 1  |  Page : 6

Intercomparison in cytogenetic dosimetry among 22 laboratories in China


Chinese Center for Disease Control and Prevention Key Laboratory of Radiological Protection and Nuclear Emergency; National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention; Chinese Center for Medical Response to Radiation Emergency, Ministry of Health, Beijing 100088, China

Correspondence Address:
Xu Su
No. 2 Xinkang Street, Deshengmenwai, Xicheng, Beijing 100088
China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2041-9414.197164

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As part of a regional International Atomic Energy Agency-coordinated research project with the support from the National Health and Family Planning Commission of China, 22 laboratories participated in the intercomparison in cytogenetic dosimetry in China. Slides for chromosomal aberrations were prepared by the Department of Radiation Epidemiology, National Institute for Radiological Protection, which organized the exercise. Slides were sent to the other participating laboratories through Express Mail Service. For estimates of dose, each laboratory scored the frequency of dicentrics plus centric rings chromosomes. The whole blood samples were irradiated with 60Co γ-rays (1.3 Gy, 2.4 Gy and 1.5 Gy, 2.6 Gy). Each laboratory got one group of the slides. Ten of the 44 estimates of dose fell within ±5% of the true physical dose, 12 fell within ±5–10%, 9 fell within ±10–15%, 12 fell within ±15–20%, while only one sample fell ± >20%. The evaluation of the respective dose was achieved by 21 laboratories.


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