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对南通市区９０台医用诊断Ｘ线机放射防护进行调查，结果表明：①６６．７％的Ｘ线机机房面积不足，尤其是容量≤１００ｍＡ的Ｘ线机；②机房门窗防护设施不完善分别占４１．３％和５２．４％；③卧透检查中５４．５％的Ｘ线机防护区测试平面监测点不能全部达到国家标准，超标点主要发生在诊视床缘上方铅挂帘两侧。文中分析了发生超标的主客观原因，并提出其防护措施。
Investigation on the radiological protection of 90 X-ray diagnostic radiographs in Nantong city showed that: (1) 66.7% of the X-ray machine room area was insufficient, especially the X-ray machine with the capacity of ≤100mA; (2) 41.3% and 52.4% respectively; ③ The 54.5% of X-ray machine protection area testing plane monitoring points in lying-in examination can not all meet the national standards, and the exceeding point mainly occurs on both sides of the lead curtains above the bed edge of diagnosis. The paper analyzes the subjective and objective causes of excessive occurrence and puts forward its protective measures.