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ultrasound diagnosis of fatal anomalies

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APPENDIX

RI

1,0

PI

3,5

0,9

3,0

0,8

2,5

95 %

2,0

0,7

95 %

1,5

5 %

0,6

1,0

0,5

0,5

0,4

20

5 %

0,0

24 28 32 36 40

22 24 26 28 30 32 34 36 38 40 42

Weeks

Weeks

K.H. Schaffer, Salzburg

Harrington et al., Ultras. in Obstet. Gynecol. 6, 1996

Fig. 19.41

Resistance index: umbilical artery.

Fig. 19.42

Pulsatility index: fetal abdominal aorta.

RI

1,00

cm/s

200

0,95

95 %

180

160

95 %

0,90

140

1

0,85

0,80

5 %

120

100

80

5 %

2

0,75

0,70

20

24 28 32 36

40

Weeks

60

40

20

20

24 28 32 36

40

Weeks

3

K.H. Schaffer, Salzburg

K.H. Schaffer, Salzburg

Fig. 19.43 Resistance index: fetal abdominal aorta. Fig. 19.44 Maximum systolic flow velocity in the fetal thoracic

aorta.

4

5

360

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