两种胸片摄影方法对肺结节诊断效果对比分析  

Effectiveness comparison between DR and CR for the diagnosis of pulmonary nodule

作　　者：吕德林[1] 

机构地区：[1]延安大学附属医院放射科,陕西延安716000

出　　处：《检验医学与临床》2013年第17期2224-2225,共2页Laboratory Medicine and Clinic

摘　　要：目的评价常规直接数字化X线摄影（DR）与增感屏摄影系统（CR）胸片对肺结节诊断效果，为合理应用DR摄影技术提供依据。方法选择2007年2月至2012年1月该院收治的肺结节病例300例，低年资医师与高年资医师对所有患者进行DR与CR胸片检查，同时进行 ROC曲线分析。结果高年资放射医师与低年资放射医师对于DR图像的Az值判定明显高于CR图像（P＜0．05），DR胸片 ROC曲线较CR胸片明显上移。在肺结节3～6 mm和7～10 mm组，DR的结节检出率明显高于CR（P＜0．05）；而在11～14 mm ，15～20 mm ，DR的结节检出率高于CR ，但是比较差异无统计学意义（P＞0．05）。结论 DR胸片较CR胸片能明显提高医师对肺结节的鉴别能力，尤其在检出肺微小结节方面，从而显著提高肺结节的检出效能。Objective To evaluate the effectiveness of digital radiography （DR） and computed radiography （CR） for the diagnosis of pulmonary nodule .Methods 300 cases with pulmonary nodule ,treated in this hospital from Feb .2007 to Jan .2012 were detected for DR and CR chest radiography and the diagnosis performance was ana-lyzed by using receiver operating characteristic （ROC） curve .Results Az values of DR images were significantly higher than CR images （P〈0 .05） ,and the ROC curve of DR was more obviously up-drifted than CR .DR was more sensitive for the diagnosis of pulmonary nodule with size of 3-6 and 7-10 mm （P〈0 .05） ,and the detection rate of nodule with size of 11-14 and 15-20 mm by DR was higher than CR ,but the difference was not significant （P〉0 .05） .Conclusion DR chest radiography could be significantly helpful for the identification of pulmonary nodule , especially of small nodule ,thus might significantly improve the detection performance for pulmonary nodules .

关 键 词：肺结节 直接数字化X线摄影 增感屏摄影系统 受试者工作特征曲线分析 

分 类 号：R135.1[医药卫生—劳动卫生]