Table 2.
Characterization of the asymptomatic population with CT findings
| CT finding | Total | % of 48 |
|---|---|---|
| Patients with CT infiltrates | 48 | 100 |
| Localization | ||
| Bilateral | 28 | 58 |
| Left | 12 | 25 |
| Right | 8 | 17 |
| Diffuse | 23 | 48 |
| Inferior | 17 | 35 |
| Superior | 7 | 15 |
| Peripheral | 47 | 94 |
| Central | 0 | 0 |
| Both peripheral and central | 1 | 2 |
| Infiltrate type | ||
| Ground glass opacity | 45 | 94 |
| Consolidation | 22 | 46 |
| Crazy paving | 13 | 27 |
| Bronchial sign | 1 | 2 |
| Tree in bud | 1 | 2 |
| Pleural effusion | 0 | 0 |
| Preexisting lung disease | 10 | 21 |
| Avg | SD | |
| Average number of infiltrates | 3.9 | ±3.0 |
| Lung volume | ||
| Infiltrate volume (cm3) | 111 | 114 |
| Whole lung volume (cm3) | 4233 | 1144 |
| Percent lung involvement (%) | 2.9 | 3.8 |
| Lung attenuation | ||
| Infiltrate attenuation (HU) | - 610 | 94 |
| Whole lung attenuation (HU) | - 830 | 42 |
Abbreviations: CT, computed tomography; HU, Hounsfield unit, Avg, average; SD, standard deviation