胎儿b超指标（Fetal B Ultrasound index）.docVIP

胎儿b超指标（Fetal B Ultrasound index） Femur length The femur is 42.1 4.1. long Abdominal diameter Biparietal diameter The concept of biparietal diameter Also called BPD, biparietal diameter. Refers to the fetal head between the left and right sides of the widest part of the length, also known as big head diameter.. Doctors often use it to observe the development of children, to determine whether there is a pelvic disproportion, smooth delivery. Should reach 9.3 cm or more at full gestation. According to the general rule, in the 5 months after pregnancy, basically consistent with the pregnancy month, that is, 28 weeks (7 months), BPD is about 7 cm, 32 weeks (8 months), about 8 cm, and so on. After 8 months of pregnancy, the average growth rate is about 0.2 cm per week, which is normal. When the initial production date cannot be determined by CRL, it is often predicted by BPD; after the mid term, it is often necessary to measure the data when estimating fetal weight. The periodic table of the fetal biparietal diameter 12 weeks gestation: the fetus is 4.58 cm long, and the initial development of the external genitalia, such as deformity, can be manifested, and the calcification of the skull is more perfect. The skull ring clear, measurable biparietal diameter, obvious malformations can be diagnosed, then the organs tend to perfect. 13 weeks of gestation: biparietal average diameter was 2.52 + 0.25 14 weeks of gestation: biparietal average diameter was 2.83 + 0.57 15 weeks of gestation: biparietal average diameter was 3.23 + 0.51 16 weeks of gestation: biparietal average diameter was 3.62 + 0.58 17 weeks of gestation: biparietal average diameter was 3.97 + 0.44 18 weeks of gestation: biparietal average diameter was 4.25 + 0.53 19 weeks of gestation: biparietal average diameter was 4.52 + 0.53 20 weeks of gestation: biparietal average diameter was 4.88 + 0.58 21 weeks of gestation: biparietal average diameter was 5.22 + 0.42 22 weeks of gestation: biparietal average diameter