uog12282-sup-0001-videoS1.avivideo/avi12389KVideoclip S1. Video clip showing angiography-like images obtained with B-mode subtraction during ‘e-Flow’ mapping of the fetal heart. Doppler enhanced moving images depicting bidirectional flow across the ventricular septal defect. Flow direction is from right to left ventricle in end-systole and diastole, reverting to left to right ventricle in systole. Angiographic images from the flow signal inside the right and left ventricles, atria and pulmonary veins can also be demonstrated.

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