Correlation between quantitative multi-detector computed tomography lung analysis and pulmonary function tests in chronic obstructive pulmonary disease patients

Egyptian Journal of Radiology and Nuclear Medicine

Table 1 Correlation between the pulmonary function tests and extent of emphysema (%LA) below − 950 HU

		FEV1	FVC	FEV1/FVC
Multi-detector CT parameters	Extent of emphysema (− 950 HU
Right lung LD index%	r value	− 0.317*	− 0.161	− 0.420**
Right lung LD index%	p value	0.025	0.264	0.002
Right upper lung LD index%	r value	− 0.434**	− 0.284*	− 0.563**
Right upper lung LD index%	p value	0.002	0.045	< 0.001
Right lower lung LD index%	r value	− 0.344*	− 0.186	− 0.478**
Right lower lung LD index%	p value	0.015	0.197	< 0.001
Left lung LD index%	r value	− 0.313*	− 0.272	− 0.413**
Left lung LD index%	p value	0.027	0.056	0.003
Left upper lung LD index%	r value	− 0.493**	− .324*	− .620**
Left upper lung LD index%	p value	< 0.001	0.022	< 0.001
Left lower lung LD index%	r value	− 0.448**	− .260	0.295*
Left lower lung LD index%	p value	0.001	.068	0.037
Both lung LD index%	r value	− 0.313*	− 0.272	− 0.413**
Both lung LD index%	p value	0.027	0.056	0.003
Both upper lung LD index%	r value	− 0.460**	− .300*	− .591**
Both upper lung LD index%	p value	0.001	0.034	< 0.001
Both lower lung LD index%	r value	− 0.397**	− 0.219	− .543**
Both lower lung LD index%	p value	0.004	0.126	< 0.001