Table 6 Correlation between different pulmonary affection (honeycombing, ground glass, reticulation, emphysema, normal lung) using quantitative CT analysis and PFTs

Honeycombing %

Correlation coefficient

− 0.448

− 0.652

− 0.551

p value

0.013

<0.001

0.002

N

30

30

30

Ground glass %

Correlation coefficient

0.016

− 0.028

− 0.154

p value

0.933

0.883

0.416

N

30

30

30

Reticular opacities %

Correlation coefficient

0.027

− 0.246

− 0.376

p value

0.888

0.189

0.041

N

30

30

30

Emphysema %

Correlation coefficient

− 0.195

− 0.262

− 0.341

p value

0.302

0.163

0.065

N

30

30

30

Normal lung %

Correlation coefficient

0.455

0.691

0.753

p value

0.011

< 0.001

< 0.001

N

30

30

30