IQon光谱CT技术在冠脉狭窄诊断中的应用价值  

Application Value of IQon Spectral CT in the Diagnosis of Coronary Artery Stenosis

作　　者：王常雨 陈新晖 刘迎强 WANG Chang-yu;CHEN Xin-hui;LIU Ying-qiang(Department of Radiology,General Hospital of Pingmei Shenma Group,Pingdingshan 467000,Henan Province,China)

机构地区：[1]平煤神马医疗集团总医院放射科,河南平顶山467000

出　　处：《中国CT和MRI杂志》2025年第3期94-96,共3页Chinese Journal of CT and MRI

基　　金：中国平煤神马集团科研立顶课题项目(41040220231483vG);2023年度河南省医学科技攻关计划项目(LHGJ20230850)。

摘　　要：目的分析IQon光谱CT技术在冠脉狭窄诊断中的应用价值。方法选取本院82例疑似冠心病患者,均接受IQon光谱CT及冠状动脉造影(CAG)检查,以CAG诊断结果为“金标准”,比较不同狭窄程度冠脉碘密度图,分析IQon光谱CT技术对冠脉狭窄诊断准确率。结果82例患者总共评估了417个冠状动脉节段,CAG检查出无狭窄115个,狭窄302个(包括轻度62个,中度68个,重度172个);不同狭窄程度冠脉碘密度图比较有统计学意义(P<0.05);IQon光谱CT诊断冠脉狭窄敏感度92.38%,特异度90.43%,准确率91.85%,Kappa值0.802;IQon光谱CT诊断重度狭窄敏感度97.09%,特异度99.59%,准确率98.56%,Kappa值0.970,诊断中度狭窄敏感度88.24%,特异度97.71%,准确率96.16%,Kappa值0.859,诊断轻度狭窄敏感度72.58%,特异度97.46%,准确率93.76%,Kappa值0.740。结论IQon光谱CT技术对冠脉狭窄程度具有较高诊断价值。Objective To analyze the application value of IQon spectral CT in the diagnosis of coronary artery stenosis.Methods 82 patients suspected of coronary heart disease were selected,and examined with IQon spectral CT and coronary angiography(CAG).With the diagnostic results of CAG as the gold standard,iodine density maps of coronary arteries with different degrees of stenoses were compared,and the accuracy of IQon spectral CT in diagnosing coronary artery stenosis was analyzed.Results A total of 417 coronary artery segments were evaluated.CAG found 115 without stenosis and 302 with stenosis,including 62 with mild stenosis,68 with moderate stenosis and 172 with severe stenosis.There were statistically significant differences in iodine density maps of coronary arteries with different degrees of stenoses(P<0.05).The sensitivity,specificity,accuracy,and Kappa value of IQon spectral CT for diagnosing coronary artery stenosis were 92.38%,90.43%,91.85%,and 0.802,respectively.For diagnosing severe stenosis,the sensitivity,specificity,accuracy,and Kappa value were 97.09%,99.59%,98.56%,and 0.970,respectively.For diagnosing moderate stenosis,the sensitivity,specificity,accuracy,and Kappa value were 88.24%,97.71%,96.16%,and 0.859,respectively.For diagnosing mild stenosis,the sensitivity,specificity,accuracy,and Kappa value were 72.58%,97.46%,93.76%,and 0.740,respectively.Conclusion IQon spectral CT is of high value in diagnosing the degree of coronary artery stenosis.

关 键 词：冠状动脉狭窄 光谱CT 冠状动脉造影 诊断 

分 类 号：R543.3[医药卫生—心血管疾病]