fig15

Figure 15. Selected video frames from suprasternal notch views of the aortic (Ao) arch of a neonate with transposition of the great arteries demonstrating a large patent ductus arteriosus (PDA); 2D (A) and color flow images (B) are shown. Reproduced from Ref.^[13]. DAo: Descending aorta; PA: pulmonary artery.