Upper rows; (A) Contegra conduit, upper left (sagittal view), upper right (coronal view); there is a focal small aneurysm in the lateral wall. (B) Melody valve, upper left (sagittal view), upper right (coronal view). Middle rows show traces of color-coded streamlines demonstrating eccentric flow, pulmonary flow is deviated from the midline, and vortex is seen. The lower rows are magnification of the vortex in a phase with the maximal vortex diameter. Vortex size measured as a percentage of the vessel diameter: diameter of the vortex (b)/diameter of pulmonary artery (a).