Abstract

目的 探讨低剂量辐射对晶状体的损伤及剂量与效应的关系.方法 对1996年和2005年绵阳市医用X线工作者的晶状体进行了流行病学调查,并检测和统计了个人受照累积剂量.结果 调查组晶状体浑浊与对照组比较均有随着工龄的增长而增高,差异有统计学意义(P<0.005).晶状体浑浊的部位,两组均以后皮质浑浊者为最多,差异有统计学意义(P<0.001).晶状体的浑浊均随累积剂量的增加而增加,但在累积剂量小于20msv的各组中,2005年调查组晶状体浑浊率呈下降趋势.结论 低剂量辐射致晶状体的浑浊是随着工龄的增长和累积剂量的增加而增加,损伤的部位以后皮质为主.故必须加强放射防护。

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