39 weeks of pregnancy B-ultrasound standard data

Ultrasound technology is constantly improving, so we see that many pregnant women will do B-ultrasound during this stage of pregnancy to better judge the health standard data of their babies. Therefore, many women who are 39% pregnant want to use B-ultrasound to check the standard data of their children. The following content provides a specific answer. You can use B-ultrasound to check the standard data of your child as soon as possible.

39 weeks of pregnancy B-ultrasound standard data

BPD (biparietal diameter) 8.8

HC (head circumference) 31.2 AC (abdominal circumference) 31.8

FL (femur length) 7.0

Calculation formula for fetal weight: The general formula in obstetrics should have an error of about 8%, for reference only! Fetal weight (kg) = biparietal diameter (cm) * 0.9-5.2 Fetal weight calculation method Formula 1: Y=-4973.72+260.69HC Formula 2: Y=-2686.60+171.48AC Formula 3: Y=-2232.56+747.42FL Formula 4: Y=-2513.51+1049.90FTH Formula 5: Y=-5168.32+100.97HC+110.86AC+143.09FL+331.43FTH Note: 1. You can use any of the formulas for calculation, and Formula 5 has the highest accuracy. 2. The meanings of the parameters are as follows, and the parameters can be found in the B-ultrasound report: Y: estimated fetal weight (g) HC: head circumference AC: abdominal circumference FL: femur length FTH: subcutaneous fat thickness of the fetal leg I will calculate it for you. It's about 6 pounds, which is within the normal range, don't worry.

B-ultrasound can better judge the standard data of the fetus in your body. For many pregnant women, since B-ultrasound will cause radiation to the fetus in the body and their own body, during pregnancy, do not rely too much on B-ultrasound to judge the health standards of your child. If there is no major situation, do B-ultrasound three times during pregnancy to better judge the standard data of your child.