Gestational Age and cheek-to-cheek diameter

(mean ± 2 SD)

Cheek-to-cheek diameter/BPD ratio predicted by gestational age (mean ± 2 SD)

Cheek-cheek
diameter

Gestational Age

Gestational Age (wks)

Cheek-to-cheek/BPD

-2 SD

Mean

+2 SD

-2 SD

Mean

+2 SD

2.5
2.7
3.0
3.2
3.5
3.7
4.0
4.2
4.5
4.7
5.0
5.2
5.5
5.7
6.0
6.2
6.5
6.7
7.0
7.2
7.5

15 ± 3
16 ± 2
17 ± 3
18 ± 2
19 ± 4
20 ± 3
21 ± 5
22 ± 3
23 ± 5
24 ± 4
25 ± 6
26 ± 5
27 ± 6
28 ± 5
30 ± 0
30 ± 5
32 ± 0
32 ± 6
34 ± 1
35 ± 0
36 ± 1

20 ± 1
21 ± 0
22 ± 2
23 ± 1
24 ± 2
25 ± 1
26 ± 3
27 ± 2
28 ± 3
29 ± 2
30 ± 4
31 ± 3
32 ± 5
33 ± 3
34 ± 5
35 ± 4
36 ± 6
37 ± 6
38 ± 6
39 ± 5
41 ± 0

25 ± 0
25 ± 5
27 ± 0
27 ± 6
29 ± 1
30 ± 0
31 ± 1
32 ± 0
33 ± 2
34 ± 1
35 ± 2
36 ± 1
37 ± 3
38 ± 2
39 ± 4
40 ± 2
41 ± 4
42 ± 3
43 ± 5
44 ± 3
45 ± 5

20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41

0.46
0.47
0.48
0.48
0.49
0.50
0.50
0.51
0.52
0.52
0.53
0.54
0.54
0.55
0.56
0.56
0.57
0.57
0.58
0.59
0.60
0.60

0.60
0.61
0.62
0.62
0.63
0.64
0.64
0.65
0.66
0.66
0.67
0.68
0.68
0.69
0.70
0.70
0.71
0.72
0.72
0.73
0.74
0.74

0.74
0.75
0.76
0.76
0.77
0.78
0.78
0.79
0.80
0.80
0.81
0.82
0.82
0.83
0.84
0.84
0.85
0.86
0.86
0.87
0.87
0.88



 

 

REFERENCES
  1. Abramowicz JS, Sherer DM, Bar-Tov E et.al. The cheek-to-cheek diameter in the ultrasonographic assessment of fetal growth. Am J Obstet Gynecol 1991;165:846-852.