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Table 1 Nomograms of 2D fetal thoracic parameters from 13 to 40 gestational week (n = 1077)

From: Reference range of fetal thorax using two-dimensional and three-dimensional ultrasound VOCAL technique and application in fetal thoracic malformations

GA(No.) Thoracic transverse diameter (cm) Thoracic anteroposterior diameter (cm) Thoracic circumference (cm) Thoracic area (cm2)
P2.5 P50 P97.5 \(\overline{x}\) SD P2.5 P50 P97.5 \(\overline{x}\) SD P2.5 P50 P97.5 \(\overline{x}\) SD P2.5 P50 P97.5 \(\overline{x}\) SD
13(28) 1.43 1.85 2.52 1.93 0.33 1.03 1.58 2.13 1.58 0.28 5.73 7.43 9.64 7.62 1.25 4.37 5.97 7.52 6.01 0.90
14(30) 1.68 2.27 2.73 2.22 0.31 1.22 1.86 2.18 1.82 0.26 6.73 8.68 9.95 8.62 0.96 5.26 7.15 9.32 6.92 0.81
15(27) 1.82 2.49 2.95 2.46 0.29 1.52 2.14 2.51 2.09 0.25 8.31 9.48 10.56 9.46 0.56 5.31 7.51 8.89 7.51 0.74
16(29) 2.28 2.65 3.35 2.70 0.29 1.62 2.26 2.72 2.21 0.31 8.75 10.22 11.23 10.09 0.69 6.12 7.91 9.71 7.92 1.07
17(26) 2.45 2.86 3.54 2.92 0.34 1.72 2.40 2.85 2.36 0.31 9.65 11.00 12.21 11.04 0.68 6.79 8.80 10.43 8.78 1.05
18(34) 2.74 3.28 3.76 3.29 0.30 1.94 2.58 3.02 2.54 0.25 10.04 11.61 12.53 11.55 0.65 8.42 10.25 11.74 10.32 0.76
19(34) 3.05 3.55 4.22 3.57 0.29 2.15 2.75 3.17 2.74 0.22 10.85 12.59 10.86 12.43 0.86 9.73 12.61 14.10 12.41 1.12
20(36) 3.25 3.76 4.46 3.79 0.30 2.34 2.89 3.27 2.87 0.26 11.81 14.05 15.26 13.92 1.02 12.52 14.08 15.69 14.15 0.88
21(40) 3.57 4.07 4.68 4.08 0.26 2.42 2.93 3.32 2.94 0.20 12.94 14.37 15.75 14.46 0.76 13.42 15.71 17.25 15.65 0.99
22(47) 3.75 4.26 4.83 4.27 0.25 2.67 3.18 3.47 3.16 0.18 14.17 15.40 16.95 15.37 0.67 15.64 16.79 18.17 16.86 0.62
23(59) 4.06 4.47 4.98 4.46 0.22 3.02 3.27 3.61 3.28 0.14 14.38 15.72 17.28 15.81 0.75 16.36 17.68 19.11 17.76 0.78
24(62) 4.28 4.61 5.29 4.64 0.22 3.16 3.39 3.74 3.40 0.13 15.21 16.74 18.54 16.86 0.88 18.39 20.34 22.72 20.24 1.25
25(60) 4.39 4.78 5.43 4.81 0.23 3.31 3.58 3.91 3.60 0.13 16.09 17.64 19.31 17.73 0.75 19.60 22.28 25.70 22.25 1.48
26(55) 4.60 5.02 5.60 5.02 0.26 3.52 3.76 4.13 3.78 0.16 17.20 18.52 19.87 18.51 0.63 21.40 24.37 26.68 24.39 1.36
27(49) 4.70 5.12 5.77 5.17 0.23 3.81 4.13 4.44 4.11 0.15 17.68 19.17 20.55 19.18 0.74 23.54 26.47 28.48 26.47 1.03
28(47) 4.97 5.36 5.93 5.40 0.19 4.05 4.36 4.66 4.35 0.15 18.40 19.95 21.58 19.97 0.77 27.25 29.34 31.26 29.25 1.02
29(44) 5.22 5.62 6.06 5.61 0.17 4.28 4.55 4.91 4.54 0.15 19.41 20.86 22.41 20.89 0.70 29.01 31.64 33.70 31.50 1.06
30(43) 5.48 5.82 6.27 5.82 0.16 4.48 4.75 5.23 4.76 0.17 20.41 21.92 23.40 21.87 0.75 31.92 33.83 36.70 34.07 1.25
31(42) 5.73 6.04 6.36 6.03 0.15 4.79 5.06 5.33 5.06 0.15 21.19 22.62 24.51 22.78 0.80 32.90 36.93 38.83 36.67 1.42
32(41) 5.92 6.21 6.56 6.23 0.15 5.01 5.26 5.56 5.24 0.14 21.84 23.53 24.82 23.51 0.75 36.06 39.76 42.72 39.83 1.49
33(37) 6.13 6.42 6.72 6.43 0.14 5.13 5.47 5.87 5.45 0.17 23.51 24.51 25.71 24.54 0.67 39.67 43.62 46.28 43.42 1.66
34(35) 6.32 6.62 6.96 6.63 0.14 5.21 5.62 6.15 5.64 0.24 24.27 25.42 26.61 25.43 0.68 42.38 46.27 48.36 45.99 1.62
35(32) 6.51 6.81 7.16 6.82 0.17 5.46 5.74 6.24 5.79 0.24 24.75 26.27 27.68 26.25 0.72 45.38 49.23 52.76 49.27 1.87
36(31) 6.74 6.97 7.28 7.00 0.15 5.58 5.92 6.40 5.98 0.25 26.18 27.30 28.42 27.27 0.65 48.63 52.61 54.24 52.23 1.40
37(29) 7.02 7.21 7.43 7.23 0.12 5.67 6.18 6.58 6.18 0.27 26.80 28.34 29.41 28.24 0.69 52.73 56.71 58.62 56.23 1.48
38(27) 7.28 7.43 7.68 7.44 0.11 6.05 6.35 6.71 6.38 0.20 27.61 29.42 30.38 29.23 0.74 57.31 59.46 61.28 59.34 1.06
38(27) 7.38 7.61 7.84 7.61 0.12 6.27 6.49 6.91 6.54 0.18 29.11 30.18 31.48 30.11 0.71 60.35 61.59 63.81 61.87 0.91
40(26) 7.52 7.83 8.05 6.48 0.12 6.46 6.78 7.13 6.76 0.18 30.21 31.32 32.41 31.32 0.71 63.18 64.82 66.54 65.95 0.99
  1. GA gestational age, SD standard deviation