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Figure 1 Sequential left parasagital fast field echocardiographic real (FFER) magnitude images in a pt post-TAPVR repair. (A)Left upper and lower pulmonary veins (solid arrow) entering the left atrium. (B–D) The progression of images from (B) to (D) show increasing turbulence in the left atrium (arrow), indicating acceleration of blood flow due to the stenosis.