超音波fl意思

"FL" in ultrasound (or sonography) refers to the "Fetal Length" measurement, which is used to estimate the gestational age of a fetus during pregnancy. This measurement is typically taken early in the pregnancy, usually before 14 weeks, and is done by measuring the length of the fetus from the top of the head to the bottom of the buttocks (crown-rump length, or CRL).

The FL measurement is an important tool in obstetrics because it can help healthcare providers determine the age of the fetus, which is crucial for monitoring the growth and development of the baby throughout the pregnancy. It can also be used to detect potential issues with the pregnancy, such as miscarriage or fetal abnormalities.

It's important to note that the accuracy of the FL measurement can be affected by the position of the fetus and the quality of the ultrasound image, so in some cases, additional measurements or tests may be necessary to confirm the gestational age.