Table 1. Patient characteristics, anatomical, and functional CT findings.
| Negative for COVID-19 (n = 4) | Asymptomatic patients (n = 9) | Symptomatic patients without dyspnea (n = 7) | Dyspneic patients (n = 9) | |
|---|---|---|---|---|
| Median age (years) | 53 (49–55) | 69 (57–71) | 60 (49–67) | 59 (45–68) |
| Male:Female | 2:2 | 4:5 | 4:3 | 6:3 |
| Median height (m) | 1.63 (1.62–1.65) | 1.62 (1.57–1.65) | 1.67 (1.63–1.74) | 1.65 (1.62–1.73) |
| Median weight (kg) | 58 (54–63) | 70 (62–75) | 70 (53–76) | 68 (63–72) |
| Boddy mass index (BMI) | 22.5 (17.7–24.2) | 26.0 (21.7–34.9) | 24.3 (19–26.7) | 25.1 (19.1–26.4) |
| Respiratory rate (RR) | 15 (14–18) | 16 (15–22) | 18 (14–24) | 21 (16–36) |
| Saturation of percutaneous oxygen (%) | 98 (98–99) | 97 (96–99) | 97 (93–99) | 94 (86–98) |
| C-reactive protein (micro g/dL) | 0.1* | 0.1 (0.1–0.4) | 1.3 (0.1–2.2) | 10.3 (2.1–16.7) |
| Whole blood cells (per microliter) | 6150* | 5630 (4990–6210) | 4881 (4503–5365) | 5822 (5290–8204) |
| Lymphocyte (%) | 20.7* | 27.4 (21.4–37.1) | 24.8 (21.9–27.4) | 12.1 (8.5–16.2) |
| Lymphocyte (per microliter) | 1273* | 1543 (1320–2252) | 1098 (996–1255) | 911 (705–943) |
| Lactate dehydrogenase (IU/L) | 158* | 182 (175–190) | 215 (183–252) | 305 (249–435) |
| D-dimer (micro g/mL) | 0.5* | Not measured | 0.6 (0.3–0.6) | 1.1 (0.8–1.8) |
| Partial pressure of arterial O2 (mmHg) | Not measured | Not measured | Not measured | 73.4 (68.9–79.6) |
| Median lung volume (cm 3 ) | 4651 (4588 to 4735) | 4757 (4074 to 5101) | 5493 (5057 to 5547) | 4035 (3580 to 4538) |
| Median average lung attenuation (HU) | -860 (-866 to -849) | -856 (-861 to -851) | -864 (-881 to– 823) | -763 (-794 to -738) |
| Percentage pneumonia in total lungs (non-aerated lung, %) | 0.0 (0.0 to 0.0) | 0.0 (0.0 to 1.3) | 0.0 (0.0 to 3.5) | 13.2 (8.1 to 19.1) |
| Aerated lung in total lungs (%) | 100 (100 to 100) | 100 (99 to 100) | 100 (96.5 to 100) | 86.8 (80.9 to 91.9) |
| Ventilation defects in total lungs (%) | 0.5 (0.2 to 1.2) | 0.7 (0.3 to 2.6) | 1.2 (0.5 to 5.3) | 11.3 (7.8 to 24.0) |
| Lung ventilation coefficient of variation | 0.45 (0.44 to 0.50) | 0.43 (0.41 to 0.59) | 0.60 (0.54 to 0.66) | 0.63 (0.57 to 0.82) |
| Ground-glass opacity (GGO) | 0 | 3 (33%) | 2 (29%) | 4 (44%) |
| Crazy-paving pattern | 0 | 2 (22%) | 2 (29%) | 5 (56%) |
| Consolidation | 0 | 2 (22%) | 2 (29%) | 7 (78%) |
| Number of lobes affected | 0 | 0 (0–1) | 0 (0–5) | 5 (2–5) |
Data in parenthesis indicate interquartile range.
*One of the four patients underwent laboratory tests.