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Objective To investigate the correlation between left ventricular diastolic function and ascending aortic elasticity quantified by 64-MDCT in patients with coronary heart disease.Methods A total of 120 cases of patients with suspected coronary heart diseases (CHD) underwent MDCT and coronary angiography (CAG) were consecutively selected,whose clinical data and primary CT data were complete.Patients with CHD indentified with CAG were included in the patient group,and the normal ones with complete cardiac function information within a month obtained by echocardiography were included in the control group.