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上海市于 1999年进行了Ｘ射线诊断的剂量水平调查工作 ,并结合频率水平调查结果粗略进行了公众集体剂量负担的估算与评价。1 根据全国统一方案[1] ,我们选择了 19种Ｘ射线诊断检查类型进行典型调查。除表 1所列 18种Ｘ射线检查外 ,胆囊造影多数医院已由超声波检查取代 ,现场未
Shanghai conducted a survey of dose levels for X-ray diagnosis in 1999 and conducted a rough estimation and evaluation of the public collective dose burden based on the frequency level survey results. 1 According to the National Uniform Plan [1], we selected 19 types of X-ray diagnostic tests for a typical survey. In addition to the 18 X-ray examinations listed in Table 1, most hospitals for cholecystography have been superseded by sonography