Table 3 Posterolateralcraniocortical width (mm) according to gestational age

20–21

25

1.46 ± 0.31

0.97–2.19

0.97

1.06

1.40

1.88

2.19

22–23

39

1.63 ± 0.36

0.95–2.57

0.96

1.19

1.61

2.88

2.55

24–25

32

1.64 ± 0.36

0.86–2.67

0.86

1.22

1.67

2.13

2.67

26–27

28

1.96 ± 0.57

1.15–3.95

1.15

1.51

1.89

2.91

3.95

28–29

24

2.28 ± 0.84

1.04–4.30

1.04

1.22

2.13

3.59

4.30