计算机辅助诊断在数字化胸片肺结节早期检出中的应用  

Application of Computer-aided Diagnosis in Early Detection of Pulmonary Nodules Based on Digital Chest Radiograph

作　　者：秦菊[1] 白红利[1] 刘畅[1] 余建群[1] 张洪静[1] 张泽江[1] 李为民[1] 张丽芝[1] 

机构地区：[1]四川大学华西医院放射科,成都610041

出　　处：《生物医学工程学杂志》2014年第5期1117-1120,共4页Journal of Biomedical Engineering

摘　　要：本文旨在研究计算机辅助诊断系统（CAD）对数字化胸片肺结节早期检出的临床应用价值。从四川大学华西医院影像传输与存储系统（PACS）数据库中随机抽取直径5-20mm的肺结节患者数字化胸片（DR）100例作为受检组,另外抽取200例正常胸片作为对照组,所有病例均经CT检查证实。由我科5名不同年资医师先不用CAD系统辅助进行诊断,三个月后再用CAD系统辅助重新诊断。对照两次诊断结果,以CT结果为金标准,分析CAD系统对肺部小结节检测的敏感性、特异性等指标的提高情况。结果显示,使用CAD系统对数字化胸片肺结节检出的敏感性和特异性等都有一定的影响,特别是有提高特异性的趋势,但差异未显示统计学意义。This study aims to explore the clinical value of the computer-aided diagnosis（CAD）system for early detection of the pulmonary nodules on digital chest X-ray.A total of 100 cases of digital chest radiographs with pulmonary nodules of 5-20 mm diameter were selected from Pictures Archiving and Communication System（PACS）database in West China Hospital of Sichuan University were enrolled into trial group,and other 200 chest radiographs without pulmonary nodules as control group.All cases were confirmed by CT examination.Firstly,these cases were diagnosed by 5different-seniority doctors without CAD,and after three months,these cases were re-diagnosed by the 5doctors with CAD.Subsequently,the diagnostic results were analyzed by using SPSS statistical methods.The results showed that the sensitivity and specificity for detecting pulmonary nodules tended to be improved by using the CAD system,especially for specificity,but there was no significant difference before and after using CAD system.

关 键 词：数字化胸片 计算机辅助诊断 肺结节 

分 类 号：R816.4[医药卫生—放射医学]