
Reference Manual 11
AC (cm) GA (wd) ±SD (wd) AC (cm) GA (wd) ±SD (wd)
19.5 24w6d 1w4d 31.5 39w0d 2w1d
20.0 25w3d 1w4d 32.0 39w6d 2w1d
20.5 25w6d 1w4d 32.5 40w4d 2w1d
21.0 26w3d 1w5d 33.0 41w2d 2w1d
21.5 27w0d 1w5d
Fetal Growth Table
Norio Shinozuka, Takashi Okai, et al. “Standard Values of Ultrasonographic Fetal Biometry”
Japanese Journal of Medical Ultrasonics, Vol.23, No.12, 1996, pp877-888
Age (wd)
Growth (cm)
-1.5SD (cm)
+1.5SD (cm)
Age (wd)
Growth (cm)
-1.5SD (cm)
+1.5SD (cm)
16w3d 10.90 9.50 12.40 30 w3d 24.70 22.20 27.10
17 w3d 12.00 10.40 13.50 31 w3d 25.60 23.00 28.10
18 w3d 13.00 11.40 14.60 32 w3d 26.50 23.80 29.00
19 w3d 14.00 12.30 15.70 33 w3d 27.30 24.50 29.90
20 w3d 15.10 13.30 16.80 34 w3d 28.10 25.30 30.70
21 w3d 16.10 14.20 17.80 35 w3d 28.90 26.00 31.60
22 w3d 17.10 15.10 18.90 36 w3d 29.70 26.60 32.40
23 w3d 18.10 16.10 20.00 37 w3d 30.40 27.30 33.20
24 w3d 19.10 17.00 21.10 38 w3d 31.10 27.90 34.00
25 w3d 20.10 17.90 22.10 39 w3d 31.80 28.50 34.70
26 w3d 21.00 18.80 23.10 40 w3d 32.40 29.10 35.40
27 w3d 22.00 19.70 24.20 41 w3d 33.00 29.60 36.10
28 w3d 22.90 20.50 25.20 42 w3d 33.60 30.10 36.70
29 w3d 23.80 21.40 26.10
Abdominal Circumference (AC) : CHITTY (D)
Fetal Growth Table
Chitty LS, Altman DG, et al. : Charts of fetal size: 3. Abdominal measurements Bri. J Obstet &
Gyn. Vol 101, 125-131, 1994
Age (W)
Growth (cm)
Min (cm) Max (cm)
Age (W)
Growth (cm)
Min (cm) Max (cm)
12 5.58 5.05 6.11 28 23.06 21.29 24.82
13 6.74 6.13 7.35 29 24.06 22.22 25.90
14 7.89 7.20 8.57 30 25.04 23.13 26.96
15 9.03 8.27 9.79 31 26.01 24.02 28.01
16 10.16 9.33 11.00 32 26.97 24.90 29.04
17 11.29 10.38 12.21 33 27.91 25.76 30.06
18 12.41 11.42 13.40 34 28.84 26.61 31.06
19 13.52 12.45 14.59 35 29.75 27.45 32.05
20 14.62 13.48 15.77 36 30.64 28.26 33.02
21 15.72 14.49 16.94 37 31.52 29.06 33.97
22 16.80 15.50 18.10 38 32.38 29.84 34.91
23 17.87 16.49 19.25 39 33.22 30.61 35.83
24 18.93 17.48 20.39 40 34.04 31.35 36.73
25 19.98 18.45 21.51 41 34.84 32.08 37.61
26 21.02 19.41 22.63 42 35.63 32.78 38.47
27 22.04 20.36 23.73
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