Abstract: Objective: To evaluate the clinical value of the diagnostic coronary angiography to delineate coronary arteries by 320 Row Dynamic Volume CT undergone by patients scheduled for valve surgery.Methods: Consecutive 35 patients with rheumatic heart disease who were scheduled for valve surgery underwent diagnostic coronary angiography to delineate coronary arteries by 320 Row Dynamic Volume CT.To analyze the prevalence of coronary artery disease(CAD) due to rheumatic heart disease as well as the part and seriousness of the luminal stenosis of the coronary branches.To evaluate the clinical value of the diagnostic coronary angiography to delineate coronary arteries by 320 Row Dynamic Volume CT.Results: Among the 364 single coronary branches,364 of them remained normal,11 of them showed 50% or more luminal stonisis due to which the patients would be detected as with CAD,while 10 showed 15-30% or less luminal stonisis which suggests coronary atherosclerotic.Conclusion: Coronary angiography by 320 Row Dynamic Volume CT should be performed in all patients clinically suspected with CAD,aged>50 and the patients with angina and/or coronary risk factors in order to decrease the occurrence of operative complication.