Fig. 4From: Chest CT imaging features of COVID-19 and its correlation with the PaO2/FiO2 ratio: a multicenter study in Upper EgyptA 40-year-old male presenting with headache, low-grade fever, and cough. His PaO2/FiO2 ratio was 350 mmHg. Axial thin-section unenhanced CT image shows bilateral upper lobe vascular enlargement within surrounding dense ground-glass opacities with interstitial thickeningBack to article page