Low-dose computed tomography (CT) findings in patients undergoing lung cancer screening (n=775)
| CT characteristic | Mean±sd or median (IQR) |
| Lung volume mL | 5945±1411 |
| Lung volume mL, –950 to 700 HU | 4570±1036 |
| Lung volume %, –950 to 700 HU | 77.5±9.2 |
| Lung volume mL, –700 to 250 HU | 555 (±466.7–659.4) |
| Lung volume %, –700 to 250 HU | 10.5±5.2 |
| Emphysema index | 10.4 (4–16.7) |
| Hepatic steatosis | 8.9 (3–16) |
| Liver density (HU) | 62.6±10.1 |
| Spleen density (HU) | 53.9±6.0 |
| Bone density (HU) | 126.3±50.2 |
| Attenuation area | |
| Low (950 HU) | 9.2 (3.4–15.4) |
| High (700 HU) | 8.4 (7.3–10.7) |
| Density HU | –839.6±36.5 |
| Volume mL | 5.8±1.4 |
IQR: interquartile range; HU: Hounsfield unit.