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Table 3 Pearson r correlations between CT metrics and FEV1, FEV1/FVC, ESI scores

From: Spirometric assessment of emphysema presence and severity as measured by quantitative CT and CT-based radiomics in COPD

 

FEV1/FVC

FEV1%

ESI

r

p

r

p

r

p

%LAA-950insp

−0.67

<.01

−0.50

<.01

0.81

<.01

%LAA-856exp

−0.71

<.01

−0.58

<.01

0.74

<.01

AWTPi10

−0.11

.11

−0.22

<.01

0.13

.09

%fLDA

−0.49

<.01

−0.42

<.01

0.46

<.01

%pLDA

−0.68

<.01

−0.52

<.01

0.80

<.01

  1. Legend: AWTPi10 airway wall thickness at an internal perimeter of 10 mm, ESI emphysema severity index, FEV1% forced expiratory volume in 1 s, %fLDA percentage of functional low density area, FVC forced vital capacity, % LAA-950insp percentage of lung attenuation area with values <− 950 Hounsfield Units at inspiratory CT scan, %LAA-856exp percentage of lung attenuation area with values <− 856 Hounsfield Units at expiratory CT scan, %pLDA percentage of persistent low density area
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Respiratory Research

ISSN: 1465-993X

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