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作 者:白银安[1] 王秋萍[2] 阎瑞[1] 张秋娟[1] 齐敏[1] 郭佑民[3]
机构地区:[1]西安交通大学医学院第二附属医院影像中心 [2]西安交通大学医学院第一附属医院影像中心,陕西西安710061 [3]首都医科大学附属北京朝阳医院放射科,北京100020
出 处:《医学影像学杂志》2007年第10期1048-1053,共6页Journal of Medical Imaging
基 金:国家自然科学基金资助项目(NO:30470509)
摘 要:目的:应用Meta分析方法对动态增强Cr扫描中以净增CT值鉴别诊断孤立性肺结节(SPNs)良恶性的价值进行评价。方法:检索Coehrane图书馆,PUBMED/MEDLINE、EMBASE、OVID、SPRINGLINK数据库(1990年1月~2006年12月)以及中国期刊网(CNKI,1994年1月~2006年12月)的英文和中文文献,筛选出与动态增强Cr扫描SPNs有关的文献。采用Meta-Test0.9软件对数据进行分析,计算汇总灵敏度、特异度及其95%可信区间,绘制出汇总受试者工作特征曲线(SROC),计算曲线下面积,评价动态增强CT扫描对SPNs的诊断价值。结果:按照制定标准共筛选出文献13篇。以动态增强扫描后SPNs净增CT值≥15HU诊断为恶性的汇总灵敏度、特异度及95%可信区间为0.96(0.93—0.9S),0.56(0.50—0.62);SPNs净增Cr值≥20HU诊断为恶性的汇总灵敏度、特异度及95%可信区间为0.95(0.90—0.9S),0.65(0.56—0.74);两者的SROC曲线下面积分别为:0.9587,0.9584。结论:以动态增强扫描净增Cr值方法对恶性SPNs诊断价值很高。以15HU和20HU分别作为诊断阈值时,两者诊断价值无明显差异(P=0.9964)。Objective: To evaluate the diagnostic value of incremental dynamic computed tomngraphy (CT) scanning in distinguishing benign from malignant of the solitary pulmonary nodules (SPNs) by Meta-analysis.Methods: COCHRANE LIBRARY, PUBMED/MEDLINE, EMBASE, OVID, SPRINGER-LINK databases (1990.1 - 2006.12) and CNKI databases (1994.1 - 2006.12) were searched for the related articles in English and Chinese literature on incremental dynamic CT scanning of the SPNs. The software of Meta-Test 0.9 was used. Pooled weighted sensitivity, pooled weighted specificity and the area under SROC curve (AUC) were used to evaluate the diagnostic performance of incremental dynamic CT scanning of the SPNs. Results: Altogether 13 articles in English and Chinese were included according to the criteria we made. The SPNs was considered as malignance when the value of incremental CT above to the threshold. The pooled weighted sensitivity of the two thresholds of 15 HU and 20 HU was 0.96 (0.93-0.98)/0.95 (0.90- 0.98), the pooled weighted specificity of them was 0.56 (0.50-0.62)/0.65(0.56-0.74), respectively. The area under SROC curve (AUC) of them was 0.9587/0.9584. Conclusion:Incremental dynamic CT scanning is a good predictive indicator of malignancy in SPNs. The threshold of 15 HU for a positive test is simiar to 20 HU ( P =0.9964).
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