Fig. 1.

Examples of CT images from patients with Covid-19 pneumonia. Axial image and coronal reconstruction in A), B): a patient showing minimal involvement, peripheral ground-glass opacities exclusively in the right lower lobe, PI score 1, PC score A. C), D): a patient with severe involvement, showing bilateral wide areas of ground-glass opacities, PI score 14, PC score A. E), F): a patient with massive lung involvement, showing near total extension of the pneumonia, and only mild consolidation in the right upper lobe, PI score 18, PC score B.

Abbreviations: CT, computed tomography; PC score, lung consolidation score; PI score, lung involvement score.