接触低剂量X射线对医务人员血细胞及微核率的影响

目的　探索长期接触低剂量X射线对医务人员血液系统及其遗传物质的影响 ,为当前放射医务人员的卫生防护工作提供依据。方法　对 115名接触低剂量X射线的医务人员作外周血细胞及淋巴细胞微核分析。结果　在低剂量 ( 0 45mSv/a)X射线条件下 ,放射医务人员淋巴细胞微核异常率随着X射线接触剂量和接触工龄增加而增高 (P <0 0 5 ) ,但未出现明显的白细胞减少现象。结论　在目前剂量情况下 ,本区接触X射线医务人员的身体未发现明显影响。

Survey on blood cells and micronucleus rates in the health workers occupationally exposed to low-dose X-ray

Objective To explore the effect of long-term low-dose X-ray on the blood system and genetic material in the health workers and to provide basis for protecting the radiological health workers. Methods 115 health workers exposed to low-dose X-ray were studied. Their peripheral blood cells and micronucleus rates of lymphocytes were tested. Results The abnormal lymphocyte micronucleus rates appeared to increase with the increase of the dose and working-year(P<0.05), but white blood cells in peripheral blood did not obviously decrease. Conclusion Under low dose X-ray exposure(0.45 mSv/a), the X-ray health workers were not obviously affected.