DSCT用于冠心病筛查及定量评估左心功能参数的准确性分析  

Accuracy Analysis of DSCT in Screening Coronary Heart Disease and Quantitative Evaluation of Left Ventricular Function Parameters

作　　者：马海鸿 吾热丽卡·艾力 潘家洁 Ma Hai-hong;Wurelica-Aili;Pan Jia-jie(Imaging Center,Second People's Hospital of Kashgar 844000,Xinjiang Uygur Autonomous Region,China)

机构地区：[1]新疆维吾尔自治区喀什地区第二人民医院,新疆喀什844000

出　　处：《中国CT和MRI杂志》2023年第8期72-74,共3页Chinese Journal of CT and MRI

基　　金：新疆维吾尔自治区基层青年科技人才培养项目(天山青年)(2019Q148);喀什地区科学研究与技术开放计划项目(KS2021075)。

摘　　要：目的探讨双源CT(DSCT)用于冠心病筛查及定量评估左心功能参数的准确性。方法选取2020年6月-2021年6月在我院进行检查的疑似冠心病患者90例,采用DSCT、超声心动图对患者进行检查,分析DSCT对左心室功能的诊断准确性及可行性。结果DSCT检出疾病影像特征的百分率为65.5%,检出冠状动脉狭窄情况的百分率为78.9%。以冠脉造影检查为标准,DSCT诊断中度狭窄以上冠脉病变的灵敏度93.75%、特异度83.33%,准确性88.71%、阳性预测值85.71%、阴性预测值92.59%。DSCT、超声心动图对左室功能指标的检出情况比较(P>0.05)。轻度狭窄组和中度狭窄组间,LV EF、ESV比较(P>0.05),3组EDV、SV及MM比较(P<0.05)。经Pearson线性相关分析,DSCT与超声心动图测定左心功能(EDV、ESV、SV、MM指数、LVEF)的相关性明显(P<0.05),Spearman相关系数分析,冠脉动脉狭窄程度与EDV和MM呈正相关,与SV、LVEF呈负相关(P<0.05)。结论双源CT在冠状动脉狭窄程度与左心室功能具有良好相关性,对冠状动脉狭窄情况和左心室功能中的诊断价值较高。Objective To investigate the accuracy of dual-source CT(DSCT)in the screening of coronary heart disease(CHD)and quantitative evaluation of left ventricular function parameters.Methods We selected 90 patients with suspected coronary heart disease who were examined in our hospital from June 2020 to June 2021,and examined them with DSCT and echocardiography to analyze the accuracy and feasibility of DSCT in diagnosing left ventricular function.Results The percentage of disease imaging features detected by DSCT was 65.5%,and the percentage of coronary artery stenosis detected by DSCT was 78.9%.With coronary angiography as the standard,DSCT has a sensitivity of 93.75%,specificity of 83.33%,accuracy of 88.71%,positive predictive value of 85.71%,and negative predictive value of 92.59%in the diagnosis of coronary lesions above moderate stenosis.Comparison of detection of left ventricular function indexes by DSCT and echocardiography(P>0.05).LVEF and ESV were compared between mild stenosis group and moderate stenosis group(P>0.05),and EDV,SV and MM were compared among three groups(P<0.05).Pearson linear correlation analysis showed that the correlation between DSCT and echocardiographic left ventricular function(EDV,ESV,SV,MM index,LVEF)was significant(P<0.05).Spearman correlation coefficient analysis showed that the degree of coronary artery stenosis was positively correlated with EDV and MM,and negatively correlated with SV and LVEF(P<0.05).Conclusion Dual source CT has a good correlation between the degree of coronary artery stenosis and left ventricular function,and has a high diagnostic value for coronary artery stenosis and left ventricular function.

关 键 词：双源CT 冠心病 定量评估 左心功能 

分 类 号：R541.4[医药卫生—心血管疾病]