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Table 3 The comparison of fetal thoracic measurements between abnormal groups and normal group

From: Reference range of fetal thorax using two-dimensional and three-dimensional ultrasound VOCAL technique and application in fetal thoracic malformations

Group (n)

GA (weeks)

Thoracic transverse diameter (cm)

Thoracic anteroposterior diameter (cm)

Thoracic circumference (cm)

Thoracic area (cm2)

Lung volume (cm3)

Thoracic volume (cm3)

Lung-to-thoracic volume ratio

Normal group (n = 1077)

26.35 ± 7.19

5.04 ± 1.54

4.06 ± 1.41

18.91 ± 6.21

28.24 ± 16.46

35.55 ± 27.81

64.27 ± 47.10

0.526 ± 0.041

SD group (n = 15)

19.89 ± 3.74*

2.56 ± 0.78*

1.92 ± 0.49*

9.77 ± 3.46*

10.14 ± 5.14*

7.34 ± 5.14*

15.46 ± 10.04*

0.454 ± 0.039*

CDH group (n = 31)

25.06 ± 4.07

4.83 ± 0.83

3.73 ± 0.0.88

17.32 ± 3.42

23.50 ± 8.1

21.93 ± 13.19#

56.82 ± 28.69

0.370 ± 0.035*

PS group (n = 25)

25.42 ± 4.85

4.87 ± 1.10

3.92 ± 1.02

18.60 ± 4.22

25.49 ± 11.19

24.03 ± 29.87#

54.31 ± 29.87

0.411 ± 0.063*

CCAM group (n = 36)

25.84 ± 4.91

4.78 ± 1.08

3.82 ± 1.00

18.03 ± 4.14

24.41 ± 10.67

23.98 ± 16.04#

52.31 ± 29.62

0.427 ± 0.064*

  1. GA gestational age, SD skeletal dysplasia, CDH congenital diaphragmatic hernia, PS pulmonary sequestration, CCAM congenital cystic adenomatoid malformation
  2. *P < 0.0001 versus normal group
  3. #P < 0.05 versus normal group