Patient's question:
Here is the ultrasound report:Fetal head: Above the symphysis pubis,
Biparietal diameter: 87mm,
Circumference of the head: 315mm,
Fetal position: LOA (Left Occiput Anteroposterior),
Fetal heart rate: 142 beats per minute, regular,
Abdominal circumference: 318mm,
Femur length: 67mm,
Spinal column continuous,
Placenta located at the posterior wall of the uterus,
Strong light spots observed within the placenta,
Amniotic fluid dark area: 40mm,
Index: 143
Doctor's answer:
Biparietal diameter: 87mm is equivalent to 35 weeks plus, femur length 67mm is equivalent to 34 weeks plus. From the ultrasound, the fetal growth and development appear normal, the is correct, the fetal heart rate, placenta, and amniotic fluid are all within the normal range. The size of the fetus is off by one week compared to the actual gestational age, which falls within the normal range. There can be a one-week margin of error because there is also an error in measuring the size of the fetus (the section is not standard, the error is relatively large). Beyond that, it is impossible to know the exact day of conception, it is only estimated based on the last menstrual period, so a one-week error is normal. I hope my explanation is helpful to you.