Reference Values Middle Cerebral Artery (MoM) - Peak Systolic Velocity

Expected Peak Velocity of Systolic Blood Flow in the Middle Cerebral Artery as a Function of Gestational Age

Velocity = cm/s

Multiples of the Median

Gestational Age (wks)

1.00

1.29
1.50
1.55
18
23.2
29.9
34.8
36.0
20
25.5
32.8
38.2
39.5
22
27.9
36.0
41.9
43.3
24
30.7
39.5
46.0
47.5
26
33.6
43.3
50.4
52.1
28
36.9
47.6
55.4
57.2
30
40.5
52.2
60.7
62.8
32
44.4
57.3
66.6
68.9
34
48.7
62.9
73.1
75.6
36
53.5
69.0
80.2
82.9
38
58.7
75.7
88.0
91.0
40
64.4
83.0
96.6
99.8

From: G. Mari, R.L. Deter, R.L. Carpenter, F. Rahman, R. Zimmermann, K.J. Moise, Jr. et al., Noninvasive diagnosis by Doppler ultrasonography of fetal anemia due to maternal red-cell alloimmunization. N Engl J Med 342 (2000), pp. 9–14

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