Table 3 CT image observations at different stages of the COVID-19 [49, 68]
From: Evolution of RNA viruses from SARS to SARS-CoV-2 and diagnostic techniques for COVID-19: a review
Early-stage | Progressive stage | Advance stage |
|---|---|---|
Localized lesions are mostly restricted to pleural or peribroncho-vascular regions of one lung or both lungs Patchy pure GGOs Focal GGOs Vascular dilation | Consolidation Stretch of pure GGOs Bilateral peripheral GGOs Vascular enlargement in lesions The predominant lesion in the lower lung Interlobular septal thickening, with crazy-paving patterns Reticular marking in sub-pleural or peribroncho-vascular regions Rare pleural effusion | Diffused lesions in both lungs and expansion of bilateral pulmonary lesions Dense and enlarged consolidation GGOs surrounding consolidation Parenchymal bands Pleural effusion |