Figure 1

The 3D PC-MRA was used to manually position four analysis planes in the Fontan pathway: superior vena cava (SVC), inferior vena cava (IVC), left pulmonary artery (LPA) and right pulmanary artery (RPA). Pathlines were generated from the IVC and SVC and color coded by vessel of origin. For an example patient, the a) PC-MRA and pathlines, b) SVC-IVC offset estimation and c) plane placement for mixing analysis are shown. The d) blood flow pathlines and plane placement for another patient with asymmetric flow distribution are shown for comparison.