The roentgenologic assessment of the degree of left-to-right shunt in secundum type atrial septal defect.
D054087:Atrial Septum; D006330:Heart Defects, Congenital; D006344:Heart Septal Defects, Atrial; D006346:Heart Septum; D006801:Humans; D011652:Pulmonary Circulation; D013902:Radiography, Thoracic
HEART DEFECTS, CONGENITAL; HEART SEPTUM ATRIAL; PULMONARY CIRCULATION; THORACIC RADIOGRAPHY