Application Of DSCT In The Assessment Of The Pulmonary Arteries In Infants With Complex Congenital Heart Disease

ObjectiveTo investigate the clinical value and accuracy of DSCT in the assessment of the pulmonary arteries in infants with complex congenital heart disease. To compare the ability of manifestation of the pulmonary vessel with construction image.MethodsDSCT and echocardiography was performed respectively in infants with complex congenital heart disease.β-receptor block agent is not required.19 patients younger than 1 year were analyzed, whose pulmonary arteries were confirmed abnormal by operation. The result was compared with each other to evaluate the ability of manifestation of the pulmonary arteries and reveal their relevance. Then pulmonary vessels are observed with method of MIP, MPA, VR and axial viewing. Different effect is shown.ResultsThe pulmonary arteries can be clearly observed from original images and multi-planar reconstruction images at different angles. DSCT is superior to echocardiography for the noninvasive assessment of pulmonary artery anatomy (overall test parameters of DSCT:sensitivity 93%, specificity 97%, PPV 99%, NPV 83%; overall test parameters of echocardiography:sensitivity 79%, specificity 80%, PPV 92%, NPV 57%). A high correlation is obtained from study (coefficient of correlation:main pulmonary artery 0.96, left pulmonary artery 0.97, and right pulmonary artery 0.92). The observed result of 103 pulmonary vessels points is no difference with method of MIP, MPA, VR and axial viewing (appear chance is 0.83,0.90,0.92 respectively). ConclusionDisregarding heart rate, DSCT is superior to echocardiography for the assessment of pulmonary artery anatomy. Therefore, it should be generalized in clinical examination. Furthermore it is beneficial to overall diagnosis to comprehend reconstructed image character.