The Application of Combination of Transthoracic Echocardiography and 64-slice Spiral CT Angicardiography in Diagnosis on Tetralogy of Fallot

Objective: To compare the diagnostic accuracy in pulmonary stenosis, the main pulmonary artery, left, right pulmonary artery, the right ventricular outflow tract inner diameter and pulmonary vascular development situation between Transthoracic Echocardiography(ECG) and the combination of Transthoracic Echocardiography and 64-slice Spiral CT Angicardiography(ACG), analyze the closely correlation between ECG and 64-slice Spiral CT ACG in left and right heart chamber indexes by correlation analysis so that we can illustrate the important value in the application of the combination of ECG and 64-slice Spiral CT ACG in TOF diagnosis accuracy. Methods: ECG and ECG combined with 64-slice Spiral CT ACG were used to diagnose the pulmonary stenosis area and evaluate pulmonary vascular development situation, and then made comparison with the actual diagnosis after surgery; ECG and ECG combined with 64-slice Spiral CT ACG were used to measure the main pulmonary artery, left, right pulmonary artery and the right ventricular outflow tract inner diameter, and then made comparison with the actual diagnosis after surgery; Correlation analysis was used to analyze the correlation between ECG and 64-slice Spiral CT ACG in left and right heart chamber indexes. Results: The diagnostic accuracy in pulmonary stenosis in ECG combined with 64-slice Spiral CT ACG group was 91.5%, which was higher than ECG group's 68.1%(<i<P</i<<0.05); There were no significant differences in Me Goon index, Nakata index, the main pulmonary artery, left, right pulmonary artery, the right ventricular outflow tract inner diameter between ECG combined with 64-slice Spiral CT ACG group and actual diagnosis after surgery group(<i<P</i<<0.05); There was closely correlation between ECG and 64-slice Spiral CT ACG in left and right heart chamber indexes by correlation analysis(<i<r</i<<0.7, <i<P</i<<0.05). Conclusions: There was closely correlation between ECG and 64-slice Spiral CT ACG in diagnosis of TOF, the diagnostic accuracy of TOF is higher in ECG combined with 64-slice Spiral CT ACG group than the ECG group which provides a new train of thought in tetralogy of TOF.