Fig. 4

Receiver Operating Characteristics (ROC) curves of pulmonary artery to ascending aorta (PA:Ao) ratio, pulmonary artery (PA) diameter, septomarginal trabeculation (SMT) diameter and right ventricular free wall thickness (RVFW) with Areas Under the Curve of 0.759, 0.741, 0.652 and 0.576, respectively