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目的：对低剂量CT检查在肺癌筛查中的应用进行探讨。方法选取在我院做健康体检者300人，分别采用低剂量CT和X线进行检查，观察检查出的结节性病灶例数。结果低剂量CT检查发现结节性病灶患者45例（30.00%），X线发现结节性病灶患者18例（12.00%），P＜0.05。结论低剂量CT检查出结节性病灶的几率高，辐射小，是临床上筛选肺癌的最佳方法，值得推广应用。“,”Objective To investigate the application of low dose CT examination in screening for lung cancer. Method Choose to do in our hospital 300 healthy people were used to low-dose CT and X-ray inspection, observation check out the number of cases of nodular lesions. Results Low-dose CT examination revealed nodular lesions in 45 patients (30.00%), X ray found 18 cases of nodular lesions in patients (12.00%), P<0.05. Conclusion Low-dose CT to check out the high probability of nodular lesions, small radiation, is the best method of screening for lung cancer in the clinical setting, should be widely applied.