Figure 1From: Vortex flow in the left atrium in healthy controls and patients with mitral valve regurgitation after atrioventricular septal defect correction: evaluation with 4D Flow MRI and particle tracingVortical flow in the left atrium in a control subject (A-C) and patient with laterally directed regurgitation (D-F). In A and D the red dotted contour indicate the segmented region of vortical flow. B and E shows the particle distribution at end-systole. C and F depicts the origin of the segmented vortical flow region as assessed by backward particle tracing.Back to article page