APPENDIX 4 - ULTRASOUND MEASUREMENTS

 

The following table gives the average values of the most used ultrasound scan measurements. Sophisticated ultrasound scan machines are able to measure the circumference of the skull and the estimated weight of the fetus.

WEEKS

BPD

CR

FEMUR

CIRC

WEIGHT

5

6

7

8

9

10

 

 

 

 

 

 

 

15

22

30

11

12

13

14

15

 

 

23

28

31

40

52

64

78

 

 

 

8

11

15

18

 

 

70

89

98

111

16

17

18

19

20

34

37

40

44

48

 

21

24

27

30

33

 

124

137

150

163

175

 

 

 

240

320

400

 

21

22

23

24

25

50

53

56

59

61

36

39

42

44

47

 

187

199

210

221

232

 

480

560

640

720

800

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