MCA Doppler:大脑中动脉收缩期
ExpectedPeakVelocityofSystolicBloodFlowintheMiddleCerebralArteryasaFunctionofGestationalAge
Velocity=cm/s
MultiplesoftheMedian
GestationalAge(wks)1.00
1.29
1.50
1.55
18
23.2
29.9
34.8
36.0
2025.5
32.8
38.2
39.5
2227.9
36.0
41.9
43.3
2430.7
39.5
46.0
47.5
2633.6
43.3
50.4
52.1
2836.9
47.6
55.4
57.2
3040.5
52.2
60.7
62.8
3244.4
57.3
66.6
68.9
3448.7
62.9
73.1
75.6
3653.5
69.0
80.2
82.9
3858.7
75.7
88.0
91.0
4064.4
83.0
96.6
99.8
From:ri,ter,rpenter,hman,mmermann,ise,al.,nglJMed(),pp.9–14
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