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目的:评价双能量减影胸部摄片在老年人健康医学体检中对肺内小结节病变的早期诊断价值,为其早期筛查探求新的方法。方法:应用双能量减影方法,选自2005-04—2008-12来医院进行年度体检者4000例。对图像进行对比分析,统计分析采用卡方检验。结果:对于肺内小结节病变,4000例胸片中普通DR胸片发现252例,DES摄片软组织像发现421例,两者皆发现的有223例,普通DR胸片发现而DES摄片软组织像未发现者29例,DES摄片软组织像发现而普通DR胸片未发现者198例,各组结果经CT和病理检查确诊,421例中假阳性者13例。结论:双能量减影摄片对肺内小结节病变的早期诊断筛查是对普通平片的一个很好补充,大大提高了检出率,降低了误诊率,在健康医学体检中具有重要意义。
OBJECTIVE: To evaluate the early diagnostic value of dual energy subtraction chest radiography in the detection of small pulmonary nodules in the elderly medical examination, and to explore a new method for its early screening. Methods: Using dual-energy subtraction method, selected from 2005-04-2008-12 to the hospital for the annual physical examination of 4000 cases. The comparative analysis of images, statistical analysis using chi-square test. Results: In the case of small pulmonary nodules, there were 252 cases of plain chest radiography in 4000 cases, 421 cases of DES in soft tissue, and 223 cases were found in both DR and DES radiographs Twenty-nine cases of soft tissue like undetected, DES soft tissue like found in 198 cases of ordinary DR chest undetected, the results of each group confirmed by CT and pathological examination, 421 cases of false positive in 13 cases. Conclusion: The early diagnosis and screening of small nodules in the lung by dual-energy subtraction radiography is a good complement to plain radiographs, which greatly improves the detection rate and reduces the rate of misdiagnosis, which is important in health medical examination significance.