Table 2.
Data used to generate the dynamic curves for COVID-19 lesion attenuation.
| Day | Lesion attenuation (HU) | # Of patients | ||||
|---|---|---|---|---|---|---|
| Average | SD | Average | SD | |||
| Overall opacity attenuation | First CT Scan | − 3.4 | 2.2 | − 590 | 104 | 29 |
| Maximum Opacity | 0.0 | 3.1 | − 511 | 116 | 28 | |
| Next CT after maximum opacity | 5.4 | 4.1 | − 634 | 108 | 15 | |
| Minimum opacity/last CT | 25.7 | 17.2 | − 724 | 74 | 19 | |
| GGO attenuation | First CT Scan (with GGOs) | − 3.4 | 2.2 | − 665 | 65 | 28 |
| Maximum % GGO | − 0.2 | 3.4 | − 639 | 54 | 27 | |
| Next Scan | 3.6 | 4.0 | − 682 | 62 | 17 | |
| Minimum % GGO/last CT | 20.5 | 15.9 | − 741 | 54 | 19 | |
| Consolidation attenuation | First CT Scan (with consolidation) | − 2.1 | 3.1 | − 223 | 52 | 27 |
| Maximum % GGO | 1.6 | 5.1 | − 174 | 50 | 21 | |
| Minimum % consolidation | 6.3 | 5.6 | − 219 | 91 | 11 | |