Fig. 3

PE images on CTPA in COVID and non-COVID patients: A–D correspond to axial and coronal images in two non-COVID patients where filling defects within the pulmonary vasculature are central (A and B in the right and left pulmonary arteries; C and D in the main trunk of the pulmonary artery (“saddle pulmonary embolism”); E–H represent peripheral pulmonary embolism in two COVID patients. Thrombi are seen in segmental arteries in right upper lobe in (E)–(F) and in segmental arteries of both lungs. In these two patients there were also parenchymal abnormalities (ground glass opacities and septal thickening) better seen in CT lung window (F). PE pulmonary embolism, CTPA computed tomography pulmonary angiogram