Table 3. Correlation between the extent of lung lesions, vascular-related parameters, and lung function.

Characteristics	VC%	FVC%	FEV1%	TLC%	DLco%
Total lung volume (mL)	0.45**	0.47**	0.50**	0.49**	0.24*
All lesion volume (mL)	−0.51**	−0.49**	−0.45**	−0.50**	−0.62**
All lesion ratio (%)	−0.62**	−0.60**	−0.57**	−0.61**	−0.67**
HC (%)	−0.12	−0.12	−0.09	−0.19	−0.45**
RE (%)	−0.48**	−0.47**	−0.47**	−0.47**	−0.41**
TRBR (%)	−0.29**	−0.27**	−0.17	−0.31**	−0.25*
GGO (%)	−0.07	−0.10	−0.08	−0.04	0.05
Right upper lung lesion (%)	−0.54**	−0.54**	−0.51**	−0.58**	−0.57**
Right middle lung lesion (%)	−0.52**	−0.51**	−0.48**	−0.53**	−0.52**
Right lower lung lesion (%)	−0.49**	−0.49**	−0.48**	−0.46**	−0.52**
Left upper lung lesion (%)	−0.43**	−0.42**	−0.38**	−0.40**	−0.48**
Left middle lunge lesion (%)	−0.61**	−0.58**	−0.55**	−0.55**	−0.56**
Left lower lung lesion (%)	−0.40**	−0.39**	−0.39**	−0.38**	−0.51**
Pulmonary vascular-related indexes
TPVV (mL)	0.31**	0.33**	0.34**	0.34**	0.36**
TPVV (%)	0.13	0.13	0.13	0.13	0.33**
The number of pulmonary vessel branches	0.29**	0.30**	0.31**	0.32**	0.36**
PAV (mL)	0.32**	0.34**	0.35**	0.36**	0.41**
PAV (%)	0.11	0.10	0.10	0.13	0.39**
The number of pulmonary artery branches	0.31**	0.33**	0.34**	0.37**	0.40**
PVV (mL)	0.29**	0.30**	0.31**	0.31**	0.31**
PVV (%)	0.15	0.15	0.15	0.15	0.28**
The number of pulmonary vein branches	0.27**	0.28**	0.29**	0.29**	0.33**

*, P<0.05; **, P<0.001. VC%, percentage of predicted vital capacity; FVC%, percentage of predicted forced vital capacity; FEV1%, percentage of forced expiratory volume in 1 second; TLC%, percentage of predicted total lung capacity; DLco%, percentage of predicted diffusing capacity for carbon monoxide. TPVV, total pulmonary vascular volume; PAV, pulmonary artery volume; PVV, pulmonary vein volume; TRBR, traction bronchiectasis; RE, reticular pattern; HC, honeycombing; GGO, ground glass opacity.