Reference Values Middle Cerebral Artery - Peak Systolic Velocity

Fitted centiles of peak systolic blood velocity in the fetal middle cerebral artery (MCA-PSV)

cm/s

Gestational Age (wks)
5th
50th
95th
19
16.7
19.7
23.0
20
18.1
21.8
26.0
21
19.5
23.9
29.0
22
20.8
26.0
32.0
23
22.2
28.2
35.0
24
23.6
30.3
38.1
25
24.9
32.4
41.1
26
26.3
34.6
44.1
27
27.7
36.7
47.1
28
29.0
38.8
50.1
29
30.4
40.9
53.1
30
31.8
43.1
56.1
31
33.1
45.2
59.1
32
34.5
47.3
62.1
33
35.9
49.5
65.1
34
37.2
51.6
68.2
35
38.6
53.7
71.2
36
40.0
55.8
74.2
37
41.3
58.0
77.2
38
42.7
60.1
80.2
39
44.1
62.2
83.2
40
45.4
64.4
86.2

From: Kurmanavicius J, Streicher A, Wright WM, Wisser J et al. Reference values of fetal peak systolic blood flow velocity in the middle cerebral artery at 19-40 weeks of gestation. Ultrasound Obstet Gynecol 17:50-53, 2001

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