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我们于 1999年组织实施了安徽省Ｘ射线诊断基本状况及其照射水平的调查研究。调查方法按照“九五”期间全国医疗照射水平调查方案[1] ,对全省Ｘ射线诊断单位开展普查与抽样调查[2 ] 。调查表由经过培训的调查人员指导各单位填写并收回。我省的分层抽样按实际情况将全省Ｘ射线诊
In 1999, we conducted a survey on the basic status of X-ray diagnosis in Anhui Province and its irradiation level. Investigation Methods According to the National Survey on Medical Exposure during the Ninth Five-Year Plan, the survey and sampling survey of X-ray diagnosis units across the province were conducted [2]. The questionnaire is guided and trained by the investigators to fill in and recover the units. Stratified sampling in our province will be based on the actual situation of the province’s X-ray clinic