Interatrial septum in subcostal view False echo dropouts can occur in the interatrial septum in apical four chamber view as the ultrasound beam is parallel to the structure
Atrial septal defect (ASD) with bidirectional shunt Atrial septal defect (ASD) with bidirectional shunt: Subcostal four chamber view shows a large defect in the interatrial septum (ASD). Right
Subcostal four chamber view – Echocardiography Subcostal four chamber view is excellent for visualization of interatrial septum. If an atrial septal dropout is seen in the apical four