【精品】胎儿双顶径、股骨长及头围腹围参照表.doc

表1 正常妊娠胎头双顶径值（cm） 孕周 均值标准差 孕周 均值标准差 11 2.080.577 26 6.310.773 12 2.350.525 27 6.670.820 13 2.580.515 28 7.090.403 14 3.030.757 29 7.230.682 15 3.450.580 30 7.390.802 16 3.790.358 31 7.930.636 17 4.100.820 32 7.940.580 18 4.280.406 33 8.130.367 19 4.260.630 34 8.300.628 20 4.680.711 35 8.470.614 21 4.790.681 36 8.520.515 22 5.150.568 37 8.710.566 23 5.471.000 3