胎儿各数据20160227，微信13

各孕周胎儿小脑横径正常值（mm）

各孕周胎儿眼眶间距正常值

眶间内距眶间外距

孕周－2SD均数＋2SD－2SD均数＋2SD

.66.27....8

.28.09....6

.28.....5

.89.....0

.09.....0

......9

......8

......1

......2

......8

......9

2......8

......2

......3

......5

......7

......5

......9

3......8

......4

2......5

4......6

3......6

3......1

足月17......7

各孕周胎儿双顶径正常值（mm）

孕周－2SD均数＋2SD

孕周－2SD均数＋2SD

1...9

1...6

...9

...0

...0

...1

...3

...5

2...4

7...9

1...2

2...6

...4

9...0

...3

...4

...0

...0

...2

3...3

8...8

...0

...6

...8

...4

足月88...6

各孕周胎儿头围正常值（mm）

孕周－2SD均数＋2SD

孕周－2SD均数＋2SD

...9

6...3

...5

04.5.4.4

09...0

.1.7.2

12..7.0

..7.2

.7.1.6

...5

.8..1

26..2.0

.3.6.5

25..6.2

.3..4

.2..9

...8

29...5

...0

.5.4.6

32...3

...4

88...7

..8.5

..3.7

足月...6

各孕周胎儿鼻骨和下颌骨正常值

鼻骨下颌骨

孕周－2SD均数＋2SD－2SD均数＋2SD

.74.05.36.89..6

.54.05....2

.34.96....1

.85.17....0

.45.47....0

.06.18....9

.16.48....4

.17.39....4

.27.....3

.47.....9

.38.....3

.08.....7

.08.....2

.29.....3

.09.....1

.19.....9

.39.....9

......9

......5

......5

......9

......4

......3

......2

足月9......1

各孕期胎儿心脏正常径线（×±SD，mm）

孕周LARALVRVAOPAIVSFO

17-.4±1.79.1±2.28.5±3.29.6±2.55.7±1.26.4±1.42.9±0.74.1±1.2

29-3.2±1..9±1..7±2..1±2.87.8±1.17.9±1.33.7±1.05.2±1.3

37-4.6±2..9±2..8±2..5±2.88.7±1.08.9±1.43.8±0.95.6±1.5

注：LA:左心房RA：右心房LV：左心室RV：右心室AO主动脉PA：肺动脉IVS：室间隔FO：卵圆孔

各孕周胎儿主动脉、肺动脉与主肺动脉之比正常值

主动脉内径（mm）肺动脉内径（mm）主、肺动脉比值

孕周10th50th90th10th50th90th10th50th90th

.11.82.51.21.92.60...12

.32.12.81.52.22.90...12

.52.33.11.72.53.20...11

.82.63.42.02.83.60...11

.02.83.62.23.03.90...11

.23.13.92.43.34.20...11

.43.34.22.73.64.50...11

.63.54.52.93.94.80...11

.93.84.73.24.25.20...11

.14.05.03.44.55.50...10

.34.35.33.74.75.80...10

.54.55.63.95.06.10...10

.74.85.84.25.36.40...10

.95.06.14.45.66.70...10

.25.36.44.75.97.10...10

.45.56.74.96.27.40...1

.65.86.95.26.47.70...10

.86.07.25.46.78.00...09

.06.37.55.77.08.30...09

.36.57.85.97.38.70...09

.56.88.06.27.69.00...09

.77.08.36.47.99.30...09

.97.38.66.78.19.60...09

.17.58.96.98.49.90...09

.47.79.17.28..20...09

.68.09.47.49..60...08

.88.29.77.79..90.70..08