Table 2 Mean values of measurements in spirometry, DVCT, and conventional CT in all patients and the patients with and without COPD and differences between the patients with and without COPD

DVCT

S₀ In

491.8 ± 115.7

485.4 ± 131.8

497.8 ± 97.5

0.715

S Ex

496.0 ± 118.9

489.7 ± 133.5

502.0 ± 101.7

0.605

CSAmax

510.8 ± 120.6

504.4 ± 136.1

516.9 ± 103.4

0.523

CSAmin

477.6 ± 114.7

471.3 ± 130.2

483.7 ± 97.4

0.715

CSAC In

19.2 ± 12.8

19.4 ± 13.6

19.0 ± 12.6

0.940

CSAC Ex

23.2 ± 19.6

26.3 ± 25.5

20.4 ± 11.7

0.753

CSACR In

8.0 ± 5.3

8.5 ± 6.4

7.6 ± 4.2

0.940

CSACR Ex

9.6 ± 7.4

11.2 ± 9.6

8.1 ± 4.1

0.599

MLDmax

-740.7 ± 40.6

-756.9 ± 28.5

-725.3 ± 44.8

0.012*

MLDmin

-816.1 ± 29.6

-821.9 ± 28.7

-810.6 ± 30.1

0.210

MLD CR

0.093 ± 0.035

0.079 ± 0.029

0.106 ± 0.036

0.020*

Conventional CT

Goddard

2.68 ± 5.04

4.44 ± 6.08

1.00 ± 3.13

0.031*

Spirometry

RV

2.03 ± 0.53

2.05 ± 0.46

2.01 ± 0.61

0.454

%RV

109.8 ± 21.3

109.3 ± 19.5

110.2 ± 23.5

0.973

TLC

5.14 ± 1.12

5.19 ± 1.05

5.08 ± 1.22

0.708

RV/TLC

0.397 ± 0.060

0.400 ± 0.068

0.395 ± 0.054

0.708

FEV₁/FVC

69.8 ± 11.1

61.3 ± 8.2

77.8 ± 6.6

0.000*

FEV₁ predicted

91.3 ± 15.6

83.9 ± 16.3

98.3 ± 11.2

0.005*