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Intercomparison in cytogenetic dosimetry among 22 laboratories in China

机译：中国22个实验室的细胞遗传学剂量比对

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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.
机译：在中国国家卫生和计划生育委员会的支持下，作为国际原子能机构协调的区域研究项目的一部分，22个实验室参加了中国细胞遗传学剂量比对的研究。国家放射防护学院辐射流行病学系准备了染色体畸变载玻片，并组织了这次演习。幻灯片已通过Express Mail Service发送到其他参与实验室。为了估算剂量，每个实验室对双着丝粒加上中心环染色体的频率进行了评分。全血样品用60 Coγ射线（1.3 Gy，2.4 Gy和1.5 Gy，2.6 Gy）照射。每个实验室得到一组幻灯片。在44个剂量估计中，有10个落在真实物理剂量的±5％内，有12个落在±5-10％的范围内，有9个落在±10-15％的范围内，有12个落在±15-20％的范围内，而只有一个样本落±> 20％。各个剂量的评估由21个实验室完成。

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