Table 1.
Imaging reporting systems in COVID-19.
| CT findings | Grade | Level of suspicion | |
|---|---|---|---|
| CO-RADS62 | |||
| Scan technically insufficient for assigning a score | 0 | Not interpretable | |
| Normal or non-infectious | 1 | Very low | |
| Typical for other infection but not COVID-19 | 2 | Low | |
| Features compatible with COVID-19 but also other diseases | 3 | Equivocal/unsure | |
| Suspicious for COVID-19 | 4 | High | |
| Typical for COVID-19 | 5 | Very high | |
| RT-PCR positive for SARS-CoV-2 | 6 | Proven | |
| COVID-RADS63 | |||
| Normal chest CT | 0 | Low | |
| Atypical findings | 1 | Low | |
| Fairly typical findings | 2A | Moderate | |
| Combination of atypical with typical-fairly typical findings | 2B | Moderate | |
| Typical findings | 3 | High | |
Refer to the original manuscripts for the list of imaging findings belonging to each grade.
Abbreviations: COVID: coronavirus disease; CT: computed tomography; RT-PCR: reverse transcription polymerase chain reaction; SARS: severe acute respiratory syndrome.