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Table 4 Gas volume (ml) calculated for the whole lung parenchyma as well as for each HU compartment (hyper-, normally, poorly and non-inflated)

From: Chest dual-energy CT to assess the effects of steroids on lung function in severe COVID-19 patients

 

Gas volume (ml)

Gas volume (%)

Mean

SD

Mean

SD

Panel A

    

All patients

    

Total lung

1436

718

  

Hyperinflated

617

557

43

18

Normally inflated

580

281

40

13

Poorly inflated

203

93

14

9

Non-inflated

36

13

3

1

 

Gas volume (ml)

Gas volume (%)

Mean

SD

Mean

SD

Panel B

    

No-steroids

    

Total lung

1465

671

  

Hyperinflated

614

421

42

14

Normally inflated

609

275

42

11

Poorly inflated

207

99

14

7

Non-inflated

36

14

2

1

 

Gas volume (ml)

Gas volume (%)

Mean

SD

α = 0.05

Mean

SD

α = 0.05

Panel C

      

Steroids

      

Total lung

1425

743

0.71

   

Hyperinflated

619

607

0.48

43

20

0.49

Normally inflated

568

286

0.62

40

14

0.66

Poorly inflated

201

91

0.88

14

10

0.39

Non-inflated

36

12

0.74

3

1

0.37

  1. Panel A: whole study population (n = 60); Panel B: No-Steroids group (n = 17); Panel C: Steroids group (n = 43). Each HU compartment was reported as absolute values as well as percentage of the total lung parenchyma. Data were reported as mean ± standard deviation (SD). Wilcoxon rank-sum test was used to detect statistical differences (α = 0.05); *: to mark statistically significant differences