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目的评价64层螺旋CT对冠状动脉成像阴性预测的准确性和应用价值。方法对156例均做过64层CT冠状动脉造影及常规冠状动脉血管造影的疑似冠心病患者进行分析,以冠状动脉造影结果为金标准主要评价对冠状动脉阴性预测率的准确性,进而得出64层螺旋CT对高危人群筛查的意义。结果多层螺旋CT所显示的1854支冠状动脉中冠状动脉狭窄128处,正确诊断109处,漏诊5处,误诊19处。阳性预测值为85.2%,阴性预测值为99.7%。结论 64层螺旋CT对冠状动脉狭窄阴性预测具备较高的准确性,准确率高达98.7%,应该作为高危人群普查筛选的首选方法 ,并可考虑作为中老年人常规体检项目进行宣传推广。
Objective To evaluate the accuracy and the value of 64-slice spiral CT in predicting negative coronary angiography. Methods A total of 156 patients with suspected coronary artery disease who underwent 64-slice CT coronary angiography and conventional coronary angiography were analyzed. The accuracy of coronary angiography negative predictive rate was mainly evaluated by the results of coronary angiography. Significance of 64 - slice spiral CT in the screening of high risk population. Results Among the 1854 coronary arteries displayed by MSCT, there were 128 coronary artery stenosis with 109 correctly diagnosed, 5 misdiagnosed and 19 misdiagnosed. The positive predictive value was 85.2% and the negative predictive value was 99.7%. Conclusion 64-slice spiral CT has a high accuracy in predicting the negative predictive value of coronary artery stenosis with an accuracy rate of 98.7%. It should be used as the screening method of screening high-risk population and should be considered as a routine medical examination item for middle-aged and elderly people.