Abstract: Objective  To study the ability of cardiac computed tomography angiography(CTA) to detect and diagnose coronary artery abnormality in patients with complicated congenital heart disease.
Methods  Retrospective analysis of 35 patients with complex congenital heart disease with coronary artery abnormalities undergoing cardiac CTA examination, and analysis of coronary artery abnormality types.
Results  The image quality scores of 35 patients with complex congenital heart disease(CHD) with coronary artery abnormalities were independently evaluated by two CT angiography 〖JP2〗senior radiologists specialty. The difference was statistically significant(χ2=70.972，P＜0.001), and the consistency was good〖JP〗(Kappa index=0.835). In this study, 43 mutations were found, mainly involving 5 types of abnormal origin, number, course, termination, and dysplasia of coronary arteries, of which 31(72.1%) were abnormal in origin of coronary artery.
Conclusion  Cardiac CTA can well display the number and type of coronary artery abnormality in patients with complex congenital heart disease, providing a more intuitive and accurate imaging basis for clinical cardiac surgery planning and decision making.

Key words: heart diseases, coronary vessels, congenital heart disease