Fig. 19

Pulmonary vein stenosis. A Contrast-enhanced CMR angiography depict an intrinsic stenosis (arrow) of the left upper pulmonary vein (LUPV). Note the difference of contrast between the left and the right pulmonary veins (RPV), as well as the large diameter of the right pulmonary veins, probably caused by flow redistribution between the two lungs. B Pulmonary vein (PV) stenosis in the Fontan patient is demonstrated in this bSSFP cine image in an axial view; external compression of the left lower pulmonary vein visualized which is impinged (arrow) between the left atrium and the descending aorta (AO) and spine. LA = left atrium, LT = lateral wall tunnel, RA = right atrium