Fig. 1From: Chest CT imaging features of COVID-19 and its correlation with the PaO2/FiO2 ratio: a multicenter study in Upper EgyptA 65-year-old man who presented with fever, headache, fatigue, and myalgias of 5 days duration. His PaO2/FiO2 ratio was 410 mmHg. Axial thin-section unenhanced CT image shows peripheral posterior ground-glass opacities in the left lower lobe with a rounded morphology (arrows)Back to article page