不同医学影像输出介质对CT肺内微小结节诊断对比研究

Comparison of Different Medical Image Output Media in the Detection of Small Pulmonary Nodule in CT

目的讨论纸质打印片与激光打印胶片对于肺内微小结节诊断准确性的影响。方法分别采用北京麦格莱菲医用纸质打印机及激光打印机打印胸部CT片。由2位放射科医师分别对胸部CT片进行读片,读片分两次进行,每次读片分析同一种打印介质图片,两次读片间隔三周,记录读片结果,采用SPSS17.0统计软件进行Mc Nemer检验、Kappar检验及受试者工作特征曲线(receiver operating characteristic curve,ROC)分析。结果采用两种不同影像输出介质读片时,纸质片诊断结果与干式激光胶片对于CT小结节诊断二者间无显著性差异。结论对于肺内微小结节的诊断,纸质片诊断准确性与干式激光胶片之间无显著性差异。

Objective To compare the diagnostic accuracy of puhnonary nodules by paper printer with that of a dry laser printer. Methods The CT images were both printed by paper printer and laser printer. Two radiologists checked the images of different media respectively for twice. The time interval was three weeks. Each time the radiologist used one way to interpret the CT images. The results were analyzed by the SPSS17.0 software and the ROC curve was painted. Results There was no significant difference between paper painter and dry laser printer for small pulmonary nodules. Conclusion For small pulmonary nodules, CT images obtained from a paper painter is similar to that from a dry, laser printer.