Bpd dating pregnancy
Level II scans are also known by other names like, dating, anomaly or targeted scan.This is a detailed scan during which each part of the fetal body is examined.
After your baby's heartbeat is checked, the main purpose of this scan is to check your baby's anatomy for normality.
A thorough examination of your baby's brain, heart, spine, kidneys, organs and limbs will be undertaken.
At the second trimester scan they check that your baby is developing normally, they assess the gestational age by measuring the crown-rump length and will also look for any major problems.
This is a routine ultrasound examination performed at 18 to 20 weeks of gestation.
For example, a BPD of 90mm and an AC of 310m will give a weight estimate of 2.7 kg (6lb).
It is common to make at least 2 measurements to estimate gestational age.
For example, if another scan done 6 or 8 weeks later says that one should have a new due date which is further away, one should not normally change the date but should rather interpret the finding as that the baby is not growing at the expected rate.
The Biparietal diameter (BPD) and head circumference (HC)The diameter between the 2 sides of the head. It increases from about 2.4 cm at 13 weeks to about 9.5 cm at term.
Measurement of the longest bone in the body reflects the longitudinal growth of the fetus. It increases from about 1.5 cm at 14 weeks to about 7.8 cm at term.Tags: Adult Dating, affair dating, sex dating