# What is fl ac?

Category:
family and relationships
pregnancy

**FL**/

**AC**ratio: poor predictor of intrauterine growth retardation. A parameter based on sonographically measured femur length (

**FL**) and abdominal circumference (

**AC**), expressed as

**FL**/

**AC**X 100 and termed the

**FL**/

**AC**ratio, has recently been proposed by Hadlock et al as an age-independent predictor of IUGR.

In respect to this, what is fl ac in ultrasound?

Biparietal diameter (BPD) is one of the basic biometric parameters used to assess fetal size. BPD together with head circumference (HC), abdominal circumference (**AC**), and femur length (**FL**) are computed to produce an estimate of fetal weight.

**FL**/Abdominal Circumference (

**AC**) The

**FL**/

**AC ratio**is normally between 0.20 and 0.247. A

**ratio**< 0.16 is diagnostic for a skeletal dysplasia8,9. However, this cut-off should only be utilized in patients with a suspected skeletal dysplasia.

Beside this, what is fl ac in pregnancy?

CRL (crown-rump length), the length from the top of the head to your baby's bottom, measurement taken in the first trimester. **AC** (abdominal circumference), the length going around your baby's belly. **FL** (femur length), the length of a bone in your baby's leg.

Ultrasound measurements of biparietal diameter (BPD), head circumference (**HC**), abdominal circumference (**AC**) and femur length (**FL**) are used to evaluate fetal growth and estimate fetal weight.