Table 3 Quantitative data of lung lesions in chest CT of COVID-19 pneumonia patients
|  | Group1 (common) n = 104 Mean (SD) | Range | Group 2 (severe) n = 49 Mean (SD) | Range |
|---|---|---|---|---|
Total lung volume | 3312.8 (920.8) | 1719 to 4982 | 2131.8 (462.3) | 1454 to 3997 |
Lung lesion volume (cc) | Â | Â | Â | Â |
 volGGOs | 1027.7 (298.5) | 441 to 1863 | 1236.9 (243.1) | 720 to 1894 |
 volConsolidation | 63.8 (21.4) | 48 to 142 | 82.7 (24.6) | 76 to 203 |
 Total | 1257.3 (154.9) | 503 to 2021 | 1331.5 (117) | 783 to 2123 |
Lung lesion burden (%) | Â | Â | Â | Â |
 %GGOs | 32.6 (10.3) | 9.7 to 48.5 | 58.6 (7.1) | 48.7 to 73.2 |
 %Consolidation | 1.1 (0.4) | 0.5 to 2.1 | 1.9 (0.7) | 1.2 to 3.4 |
 Total | 33.9 (11.2) | 10.3 to 49.6 | 60.7 (7.4) | 51.3 to 73.1 |
Mean lung density | − 768.6 (36.9) | − 660 to − 854 | − 685.9 (34.1) | − 604 to − 771 |
Lesion mean attenuation | Â | Â | Â | Â |
 GGOs | − 543.5 (60.8) | − 341 to − 687 | − 496.7 (51.3) | − 327 to − 628 |
 Consolidation | − 11.7 (24.8) | − 29 to 47 | − 6.4 (48.9) | − 3 to 68 |