Table 1 CO-RADS score scale
From: Doubts and concerns about COVID-19 uncertainties on imaging data, clinical score, and outcomes
CO-RADS score | Diagnostic suspicion | Findings |
|---|---|---|
CO-RADS 1 | Normal or non-infectious etiology | No abnormalities or emphysema, perifissural nodules, lung tumors, fibrosis |
CO-RADS 2 | Infectious etiology not compatible with COVID-19 | Tree-in-bud, centrilobular nodular pattern, lobar or segmental consolidation, lung cavitation |
CO-RADS 3 | Equivocal findings | Perihilar ground-glass, homogenous extensive ground-glass with or without sparing of some secondary lobules, or ground-glass with interlobular septal thickening in absence of other typical CT finding |
CO-RADS 4 | Typical for COVID-19 but with some overlap with other viral pneumonias | Similar to CO-RADS 5 but not located in contact with visceral pleura or are located strictly unilaterally, are in a predominant peribronchovascular distribution or superimposed on severe pre-existing pulmonary abnormalities |
CO-RADS 5 | Typical for COVID-19 | Mandatory features: ground-glass opacities, with or without consolidations, close to visceral pleura, including fissures, and multifocal bilateral distribution Confirmatory pattern (at least one): crazy-paving, consolidations, organizing pneumonia |