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电离辐射引起人体细胞的特征性染色体损伤,许多年后仍可在循环淋巴细胞中检出.本文作者观察了受照射后30年以上的三组人群的染色体畸变.第一组选自2856名幼儿期因胸腺肿大而进行放疗的人群,其胸腺接受空气剂量的范围为6.45～322.5mC/kg(25～1250R),平均58.05mC/kg(225R),被采集血样的人平均受照剂量为54.18mC/kg(210R).未照射者5053名.分别从中选出143名受照射者和50名未照射者作对照观察.第二组选自3089名18岁以下扁桃体肿大手术(1499例)或接受局部放疗(1590例)的淋巴细胞增生病例.扁挑体标准照射剂量为206.4mC/kg
Ionizing radiation causes characteristic chromosomal damage in human cells and is still detectable in circulating lymphocytes many years later.We examined the chromosomal aberrations in three groups of individuals exposed to radiation for more than 30 years.The first group was selected from 2856 children During the period of thymus enlargement and radiotherapy, the thymus air dose ranged from 6.45 to 322.5 mC / kg (25 to 1250R), with an average of 58.05 mC / kg (225R). The average dose of the collected blood samples was 54.18mC / kg (210R) .5053 non-irradiated persons were selected 143 were selected from the irradiated and 50 non-irradiated control were observed in the second group were selected from 3089 under the age of 18 tonsil enlargement surgery (1499 cases ) Or received local radiotherapy (1590 cases of lymphocytic hyperplasia cases.) Pick standard body dose of 206.4mC / kg