Accurate dating sonogram
Frost worked in insurance and software testing before becoming a writer.She holds a Bachelor of Arts in elementary education with a reading endorsement.Later in the pregnancy, the obstetrician or midwife uses measurements of the expectant mother's abdomen.Called the fundal height, the measurement used goes from the top of the uterus to the pubic bone.There is no sensation at all from the ultrasound waves.
In the first trimester, the ultrasound measures the fetus from head to the pelvis, since the baby is so small.
The estimated gestational age is likely to appear incorrect because the measurements would lump your baby in with babies further along in development.
In addition to the ultrasound, the doctor has other methods of estimating gestational age.
This measurement in centimeters usually corresponds to the point in the pregnancy, so a woman at 24 weeks pregnancy should measure around 24 cm.
Obstetric Ultrasound is the use of ultrasound scans in pregnancy.An accurate gestational age gives your prenatal care provider a basis for measuring the baby's development and growth.