Table 4 Spearman’s correlation coefficients (ρ) between the lung attenuation gradients and the ratio of TLC/CT-based lung volume (100 participants).
ρ between the lung attenuation gradients and the ratio of TLC/CT-based lung volume (supine) | ||
|---|---|---|
Supine | Anteroposterior direction | |
Level of the aortic arch | ||
Right upper lobe | 0.2531 | |
Left upper lobe | 0.3861 | |
Level of the inferior pulmonary vein | ||
Right middle lobe | 0.1491 | |
Right lower lobe | 0.3823 | |
Left upper lobe | 0.2827 | |
Left lower lobe | 0.4700 | |
Level just above the diaphragm | ||
Right lower lobe | 0.5311 | |
Left lower lobe | 0.4470 | |
Craniocaudal direction | ||
Right lower lobe | 0.2836 | |
Left lower lobe | 0.1716 |
ρ between the lung attenuation gradients and the ratio of TLC/CT-based lung volume (standing) | ||
|---|---|---|
Standing | Anteroposterior direction | |
Level of the aortic arch | ||
Right upper lobe | -0.1430 | |
Left upper lobe | -0.0675 | |
Level of the inferior pulmonary vein | ||
Right middle lobe | -0.3204 | |
Right lower lobe | 0.1349 | |
Left upper lobe | -0.1473 | |
Left lower lobe | -0.0746 | |
Level just above the diaphragm | ||
Right lower lobe | -0.2180 | |
Left lower lobe | -0.1191 | |
Craniocaudal direction | ||
Right lower lobe | 0.1592 | |
Left lower lobe | 0.2150 |
