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Fig. 1F. —65-year-old woman with scleroderma, severe pulmonary artery hypertension, and cardiac murmur. Ao = aorta. AAo = ascending aorta, DAo = descending aorta, PA = pulmonary artery. On cardiac steady-state free precession MR images, axial plane (F) and sagittal plane (G) images show dephasing of blood (white arrows) in pulmonary artery caused by blood flow from aorta to pulmonary artery via PDA.