Fig. 9
From: Pictorial review of the pulmonary vasculature: from arteries to veins
Two patients with acute pulmonary emboli. a Axial contrast-enhanced CT image shows a large saddle embolus of the main pulmonary artery (black arrow) as well as lobar/segmental involvement of the right and left pulmonary arteries (white arrows). b Axial contrast-enhanced CT image of another patient with bilateral acute pulmonary emboli demonstrate the central focal filling defect within bilateral segmental pulmonary arteries which is rimmed by contrast (*)