Fetal Thoracic Circumference - Normal Values

 

 

 

GA
(wks)

No.

Predictive Percentiles (measurements in cm)

2.5

5.0

10

25

50

75

90

95

97.5

16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

6
22
31
21
20
30
18
21
27
20
25
24
24
24
27
24
28
27
25
20
23
22
21
7
6

5.9
6.8
7.7
8.6
9.5
10.4
11.3
12.2
13.2
14.1
15.0
15.9
16.8
17.7
18.6
19.5
20.4
21.3
22.2
23.1
24.0
24.9
25.9
26.8
27.7

6.4
7.3
8.2
9.1
10.0
11.0
11.9
12.8
13.7
14.6
15.5
16.4
17.3
18.2
19.1
20.0
20.9
21.8
22.8
23.7
24.6
25.5
26.4
27.3
28.2

7.0
7.9
8.8
9.7
10.6
11.6
12.5
13.4
14.3
15.2
16.1
17.0
17.9
18.8
19.7
20.6
21.5
22.5
23.4
24.3
25.2
26.1
27.0
27.9
28.8

8.0
8.9
9.8
10.7
11.7
12.6
13.5
14.4
15.3
16.2
17.1
18.0
18.9
19.8
20.7
21.6
22.6
23.5
24.4
25.5
26.2
27.1
28.0
28.9
29.8

9.1
10.0
11.0
11.9
12.9
13.7
14.6
15.5
16.4
17.3
18.2
19.1
20.0
21.0
21.9
22.8
23.7
24.6
25.5
26.4
27.3
28.2
29.1
30.0
30.9

10.3
11.2
12.1
13.0
13.9
14.8
15.7
16.6
17.5
18.4
19.3
20.2
21.2
22.1
23.0
23.9
24.8
25.7
26.6
27.5
28.4
29.3
30.2
31.1
32.1

11.3
12.2
13.1
14.0
15.0
15.8
16.7
17.6
18.5
19.4
20.3
21.3
22.2
23.1
24.0
24.9
25.8
26.7
27.6
28.5
29.4
30.3
31.2
32.2
33.1

11.9
12.8
13.7
14.6
15.5
16.4
17.3
18.2
19.1
20.0
21.0
21.9
22.8
23.7
24.6
25.5
26.4
27.3
28.2
29.1
30.0
30.9
31.9
32.8
33.7

12.4
13.3
14.2
15.1
16.0
16.9
17.8
18.8
19.7
20.6
21.5
22.4
23.3
24.2
25.1
26.0
26.9
27.8
28.7
29.6
30.6
31.5
32.4
33.3
34.2

 

 

 

REFERENCES

  1. Chitkara U, Rosenberg J, Chervenak FA et al. Prenatal sonographic assessment of the fetal thorax: Normal values. Am J Obstet Gynecol 1987;156:1069-1074.