Figure 9.

Conventional pulmonary angiography correlated with CT pulmonary angiography (CTPA). Selective right pulmonary angiography (A) showing irregularities at the origin of the right upper lobar and proximal interlobar pulmonary arteries (arrows in A), suggestive of chronic pulmonary embolism. Composite image of right and left pulmonary angiography (B) during parenchymal enhancement shows multiple hypoperfused areas, especially in right upper and left lower lobes (asterisks). Coronal maximum intensity projection CTPA (C) shows arterial wall thickening and luminal narrowing in the right pulmonary artery and segmental branches of the left lower lobar pulmonary artery (arrows).