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