Fig. 3
From: Cardiovascular imaging approach in pre and postoperative tetralogy of Fallot
Echocardiography in postoperative TOF. a Parasternal short axis view of pulmonary valve (crosses), right ventricular outflow tract (arrow), main and branch pulmonary arteries. b Turbulence along stenotic pulmonary valve of an RV to pulmonary artery conduit without stenosis in the RV outflow tract. c Doppler tracing along the stenotic conduit indicates severe stenosis with maximal pressure gradient 98 mmHg