Figure 2

Sequence analysis of systemic ventricular flow during systole and diastole in Fontan patients and controls. The vortex from the Fontan group was consistently shorter, wider and rounder than in controls. The vortices were located at the centre of the left ventricle throughout diastole and systole and did not redirect flow in a coherent, sequential fashion as in controls. The location, shape and sphericity of the main vortices differ clearly from controls in all cardiac cycle [early diastole(A), late diastole(B), ejection (C)].