Patient's question:
I would like to ask what is the biparietal diameter? At 15 weeks, the biparietal diameter of the fetus is 3.4 cm, and the femur length is 1.5 cm. Is this normal?Is the femur length too short? Will the legs be short when the child grows up?
Doctor's answer:
Hello, in your case, the main focus is on examining the development of the child's head. The specific details are as follows. At full term, the BPD should be 9.3 centimeters or more. According to general patterns, after the fifth month of pregnancy, the BPD is generally consistent with the gestational age. For example, at 28 weeks (7 months), the BPD is approximately 7.0 centimeters, and at 32 weeks (8 months), it is about 8.0 centimeters, and so on. After the eighth month of pregnancy, an average growth of about 0.2 centimeters per week is considered normal. When the CRL cannot be used to determine the estimated due date in the early stages, the BPD is often used to predict it. In the middle stages, this data is also often needed to estimate the fetal weight.