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A. Full-color, coronal 3D VR (volume rendering) thick slab cine (anterior to posterior) emphasizing cardiovascular and pulmonary parenchymal structures and demonstrating marked ectasia of the central pulmonary arteries, compatible with pulmonary hypertension. (In this patient, mean pulmonary artery pressure was 100 mm Hg.) Also note asymmetry of arterial caliber, with relative oligemia of the left lower lobe and ectatic right upper lobe arteries, attributed to chronic thromboembolic pulmonary hypertension. Video available on AccessMedicine.com.