Objective: To explore the clinical guideline value of novel real - time three - dimensional echocardiography (RT- 3DE) in percutaneous transcather closure treatment of atrial septal defect (ASD) .
Methods:Investigated all chambers of the heart ; pulmonary artery pressure and tricuspid regurgitation in 68 congenital antrum septal defect and 82 normal neonates by colour Doppler echocardiography.