目的 探究CT血管成像联合12导 联动态心电图(AECG)对冠心病的诊断价 值。方法 选择2015年7月至2018年1月我 院心血管内科收治的疑似冠心病的患者92 例作为研究对象，所有患者均行多层螺旋 CT及12导联AECG检查，并经冠状动脉造影 (CAG)证实，以CAG诊断结果为金标准，计 算MSCT、12导联AECG及两者联合诊断冠心 病的灵敏度、特异度、阳性预测值、阴 性预测值及准确率。结果 MSCT诊断冠心 病的灵敏度、特异度、准确度、阳性预测 值、阴性预测值分别为86.79%、87.18%、 86.95%、90.19%、82.93%；AECG诊断冠心 病的诊断灵敏度、特异度、准确度、阳 性预测值、阴性预测值分别为79.24%、 84.61%、81.52%、87.50%、75.00%；两者 联合诊断准确度显著高于MSCT及12导联 AECG，差异具统计学意义(P<0.05)。结论 CT血管成像联合12导联动态心电图可提高 冠心病诊断准确性，可在临床上推广使 用。

Objective To investigate the diagnostic value of CT angiography combined with 12-lead dynamic electrocardiogram (AECG) for the diagnosis of coronary heart disease. Methods A total of 92 patients with suspected coronary heart disease in our department from July 2015 to January 2018 were selected. All patients underwent multislice spiral CT and 12-lead AECG, confirmed by coronary angiography (CAG), taking CAG diagnosis results as the gold standard,the sensitivity, specificity, positive predictive value, negative predictive value and accuracy of coronary heart disease by MSCT, 12-lead AECG and their combined diagnosis were calculated. Results The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of coronary heart disease by MSCT diagnosis were 86.79%, 87.18%, 86.95%, 90.19% and 82.93%, respectively, the sensitivity, specificity, accuracy, positive predictive value and negative predictive value of coronary heart disease by AECG diagnosis were 79.24%, 84.61%, 81.52%, 87.50%, and 75.00%, respectively. The combined diagnosis accuracy was significantly higher than that of MSCT and 12-lead AECG(P<0.05). Conclusion CT angiography combined with 12- lead dynamic electrocardiogram can improve the diagnostic accuracy of coronary heart disease and has potential to be promoted clinically.