Mandible Length
Chervenak FA, Isaacson GC, Campbell S (eds)
Ultrasound in Obstetrics and
gynecology 1991;
Table A1-14:pg
1784 Boston: Little, Brown and Company
|
GA (wks) |
-2SD |
Mean |
+2SD |
|
12 |
7.2 |
9.8 |
12.4 |
|
13 |
8.4 |
10.6 |
12.8 |
|
14 |
9.8 |
13.6 |
17.4 |
|
15 |
10.7 |
14.7 |
18.7 |
|
16 |
13.7 |
17.1 |
20.5 |
|
17 |
14.6 |
19.6 |
24.6 |
|
18 |
17.3 |
21.1 |
24.9 |
|
19 |
18.1 |
21.5 |
24.9 |
|
20 |
20.1 |
24.7 |
29.3 |
|
21 |
21.9 |
27.1 |
32.3 |
|
22 |
23 |
27.4 |
31.8 |
|
23 |
26.3 |
29.5 |
32.7 |
|
24 |
25.7 |
31.3 |
36.9 |
|
25 |
24.8 |
29.8 |
34.8 |
|
26 |
21.9 |
32.3 |
42.7 |
|
27 |
29.2 |
36.6 |
44 |
|
28 |
9 |
34 |
59 |
|
29 |
33.1 |
40.3 |
47.5 |
|
30 |
38 |
38 |
38 |
|
31 |
16.1 |
34.5 |
52.9 |
|
32 |
25.8 |
34.8 |
43.8 |
|
33 |
42 |
42 |
42 |
|
35 |
40 |
40 |
40 |