Dating scan nuchal scan
The crown rump length is a universally recognized term, very useful for measuring early pregnancies.
The CRL (see image above between the two white marked 1) is highly reproducible and is the single most accurate measure of gestational age.
The top line represents the skin and bottom one, represents the nasal bone.
From 6 to 11 weeks gestational age, the fetal CRL grows at a rate of about 1 mm per day.
The baby will be measured, and the anatomy examined in detail.
It is recommended that all pregnant women have a scan in the first trimester at around 12 weeks of pregnancy to confirm their dates.
The 12 week scan is a routine ultrasound examination carried out at 10 to 14 weeks of gestation.
At the first trimester scan they confirm that the fetus is alive, they assess the gestational age by measuring the crown-rump length and will also look for any major problems.
At the first trimester scan they confirm that the fetus is alive, they assess the gestational age by measuring the crown-rump length and will look for any major problems.