Table 3.
Frequency of chest CT findings in COVID-19
| CT signs | Frequency | Stage |
|---|---|---|
| Ground glass opacity | ++++ | E/A/S |
| Consolidation without ground glass opacity | ++ | S |
| Ground glass opacity and crazy paving | ++ | E/A/S |
| Ground glass opacity with consolidation | +++ | E/A/S |
| Patchy ground glass opacity | +++ | E |
| Bilateral distribution | ++++ | E/A/S/D |
| Peripheral distribution | +++ | E |
| Air bronchogram | ++ | E/A/S |
| Pleural effusion | + | S |
| Strip-like opacity | + | D |
The appearance frequency of each CT characteristic is described in order from low to high as (+~++++); E, A, S, and D stand for stage early, advanced, severe, and dissipation