Imaging Science and Photochemistry ›› 2020, Vol. 38 ›› Issue (4): 739-743.DOI: 10.7517/issn.1674-0475.200207

• Review and Articles • Previous Articles     Next Articles

Diagnostic Value of 12-lead Dynamic Electrocardiogram Combined with CT Angiography in Asymptomatic Myocardial Ischemia

LIAO Pinliang1, LI Hailing2, ZHANG Zhihui1, QU Xiaolong1, ZHUANG Guoqiang1, MA Yuanqiuzi1   

  1. 1. The First Hospital Affiliated to AMU(Southwest Hospital), Chongqing 400038, P. R. China;
    2. Chongqing Kanghua Zhonglian Cardiovascular Hospital, Chongqing 400000, P. R. China
  • Received:2020-02-24 Online:2020-07-15 Published:2020-07-15

Abstract: A total of 98 patients with suspected asymptomatic myocardial ischemia (SMI) were enrolled. All patients underwent 12-lead dynamic electrocardiography and computed tomography coronary angiography (CTA). The degree of coronary stenosis and the status of asymptomatic myocardial ischemia were analyzed. Based on the results of coronary angiography (CAG), the accuracy, sensitivity, and specificity of 12-lead dynamic electrocardiogram, CTA, and the combination of two methods were compared. The sensitivity and accuracy of CTA were significantly higher than that of 12-lead dynamic electrocardiogram (P<0.05). The sensitivity and specificity of the combined examination were significantly higher than those of CTA or dynamic electrocardiogram alone (P<0.05). Above results show that the combined application of 12-lead dynamic electrocardiogram and CTA have significant value in the diagnosis of SMI. They can be widely used in clinical practice, and provide a practical reference for the diagnosis and evaluation of SMI.

Key words: asymptomatic myocardial ischemia, 12-lead dynamic electrocardiogram, computed tomography coronary angiography