Table 6

Gestational age assessment by femur length (FL)

Centiles






50th
2.5th
97.5th
FL (mm)
 weeks
 days
 Weeks
 days
 weeks
 days
11
 11
 5
 12
 0
 13
 6
12
 12
 1
 12
 4
 14
 3
13
 12
 4
 13
 0
 14
 6
14
 13
 0
 13
 3
 15
 2
15
 13
 3
 13
 5
 15
 5
16
 13
 5
 14
 1
 16
 0
17
 14
 1
 14
 4
 16
 3
18
 14
 4
 14
 6
 16
 6
19
 14
 6
 15
 2
 17
 1
20
 15
 2
 15
 4
 17
 4
21
 15
 4
 16
 0
 17
 6
22
 15
 6
 16
 2
 18
 2
23
 16
 2
 16
 5
 18
 4
24
 16
 4
 17
 0
 19
 0
25
 16
 6
 17
 2
 19
 2
26
 17
 1
 17
 4
 19
 4
27
 17
 4
 18
 0
 20
 0
28
 17
 6
 18
 2
 20
 2
29
 18
 1
 18
 4
 20
 4
30
 18
 3
 18
 6
 20
 6
31
 18
 5
 19
 1
 21
 2
32
 19
 0
 19
 3
 21
 4
33
 19
 2
 19
 5
 21
 6
34
 19
 4
 20
 1
 22
 1
35
 19
 6
 20
 3
 22
 3
36
 20
 2
 20
 5
 22
 5
37
 20
 4
 21
 0
 23
 1
38
 20
 6
 21
 2
 23
 3
39
 21
 1
 21
 4
 23
 5
40
 21
 3
 21
 6
 24
 0

Salpou et al. BMC Pregnancy and Childbirth 2008 8:48   doi:10.1186/1471-2393-8-48