双源CT造影术用于冠状动脉狭窄程度的诊断价值  

Diagnostic value of dual-source CT angiography for assessment of the degree of coronary stenosis

作　　者：廖云 韦琳[1] 卢忠武[1] 陆泳梁 唐运军 LIAO Yun;WEI Lin;LU Zhongwu;LU Yongliang;TANG Yunjun(Department of Radiology,Hechi Municipal People’s Hospital,Hechi 547000 China)

机构地区：[1]广西壮族自治区河池市人民医院放射科,河池广西547000

出　　处：《中国辐射卫生》2023年第3期355-359,共5页Chinese Journal of Radiological Health

摘　　要：目的评价双源CT造影用于冠状动脉狭窄程度评价的价值。方法经双源CT造影或常规冠状动脉造影高度提示冠状动脉狭窄的110例患者作为研究对象,以常规冠状动脉造影结果作为金标准,评价双源CT造影用于诊断冠状动脉狭窄的灵敏度、特异度、阳性预测值、阴性预测值、准确性。应用Kappa一致性检验评价双源CT造影和常规冠状动脉造影诊断冠状动脉狭窄的一致性。结果常规冠状动脉造影成功对110例患者的1401支冠状动脉节段显像,而双源CT造影成功对110例患者的1382支冠状动脉节段显像(98.64%)。双源CT造影诊断冠状动脉狭窄的灵敏度、特异度、阳性预测值、阴性预测值分别为97.9%、97.3%、90.4%和99.4%,双源CT造影与常规冠状动脉造影用于冠状动脉狭窄分级一致性较高(Kappa值=0.87,U=58.36,P<0.01)。双源CT造影用于>50%狭窄的冠状动脉节段诊断灵敏度、特异度、阳性预测值、阴性预测值和准确性分别为94.7%、96.8%、83.7%、99.0%和96.5%。结论双源CT造影诊断冠状动脉狭窄准确性、可靠性较高,可作为一种评价冠状动脉狭窄的无创工具。Objective To evaluate the value of dual-source CT angiography for evaluating the degree of coronary stenosis.Methods A total of 110 patients with a high likelihood of coronary stenosis identified by dual-source CT angiography or conventional coronary angiography were enrolled.The sensitivity,specificity,positive predictive value,negative predictive value and accuracy of dual-source CT angiography for diagnosis of coronary stenosis were evaluated with conventional coronary angiography as a gold standard.The agreement between dual-source CT angiography and conventional coronary angiography for evaluation of coronary stenosis was evaluated using Kappa statistic.Results A total of 1401 coronary artery segments from 110 patients were displayed on conventional coronary angiography,while 1382 segments were successfully visualized in dual-source CT angiography(98.64%).The sensitivity,specificity,positive predictive value and negative predictive value of dual-source CT angiography were 97.9%,97.3%,90.4%and 99.4%for diagnosis of coronary stenosis,and there was high consistence between dual-source CT angiography and conventional coronary angiography for grading coronary stenosis(Kappa statistic=0.87,U=58.36,P<0.01).In addition,the sensitivity,specificity,positive predictive value,negative predictive value and accuracy of dual-source CT angiography were 94.7%,96.8%,83.7%,99.0%and 96.5%for grading stenosis of coronary artery segments.Conclusion Dual-source CT angiography is accurate and reliable for diagnosis of coronary stenosis,which may be a non-invasive tool for assessment of coronary stenosis.

关 键 词：双源CT造影 冠状动脉造影 冠状动脉狭窄 诊断价值 

分 类 号：R816[医药卫生—放射医学]