
Reference Manual 41
FL (cm) GA (wd) ±SD (wd) FL (cm) GA (wd) ±SD (wd)
2.80 19w0d 1w3d 6.30 33w0d 2w6d
3.10 20w0d 1w4d 6.50 34w0d 3w0d
3.40 21w0d 1w4d 6.70 35w0d 3w1d
3.60 22w0d 1w5d 6.90 36w0d 3w2d
3.90 23w0d 1w6d 7.10 37w0d 3w2d
4.10 24w0d 2w0d 7.30 38w0d 3w2d
4.40 25w0d 2w0d 7.40 39w0d 3w2d
4.70 26w0d 2w1d 7.50 40w0d 3w2d
Fetal Growth Table
Hansmann, Hackeloer, Staudach, Wittman “Ultrasound Diagnosis in Obstetrics and
Gynecology” Springer- Verlag, New York, 1986, p.176.
Age
(W)
Growth
(cm)
Min
(cm)
Max
(cm)
Age
(W)
Growth
(cm)
Min
(cm)
Max
(cm)
13 1.00 1.00 1.00 27 4.90 4.40 5.50
14 1.20 1.20 1.20 28 5.10 4.60 5.70
15 1.60 1.30 2.10 29 5.40 4.90 5.90
16 1.80 1.50 2.30 30 5.60 5.10 6.20
17 2.20 1.80 2.60 31 5.90 5.30 6.40
18 2.50 2.10 2.90 32 6.10 5.50 6.60
19 2.80 2.40 3.20 33 6.30 5.70 6.80
Age
(W)
Growth
(cm)
Min
(cm)
Max
(cm)
Age
(W)
Growth
(cm)
Min
(cm)
Max
(cm)
20 3.10 2.70 3.50 34 6.50 5.90 7.00
21 3.40 2.90 3.80 35 6.70 6.10 7.20
22 3.60 3.20 4.10 36 6.90 6.30 7.40
23 3.90 3.40 4.40 37 7.10 6.50 7.70
24 4.10 3.70 4.70 38 7.30 6.70 7.90
25 4.40 3.90 4.90 39 7.40 6.80 8.10
26 4.70 4.20 5.20 40 7.50 7.00 8.40
Femur Length (FL) : HOHLER
GA Table
Hohler, C.W., Quetel, T.A. “Fetal Femur Length: Equations for Computer Calculation of
Gestational Age from Ultrasound Measurements.” American Journal of Obsterics and
Gynecology, Vol. 143, No. 4: 479-481, June 15, 1982
GA = 9.18 + 2.67 × FL + 0.16 × FL
2
Output Unit : w (weeks)
Input Unit : cm
Min Range : 1.0 cm
Max Range : 8.0 cm
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