Patient's question:
Ask the doctor, what are the normal values for the occipitofrontal diameter and humerus length at 28 weeks in ultrasound data, and what does "fetal presentation: head" mean? Thank youDoctor's answer:
Double Top Diameter: Maybe you didn't see the double top diameter on your ultrasound report, but you might have seen BPF. In fact, BPF refers to the double top diameter. How is it measured? The doctor measures it based on the ultrasound image, taking the longest part of the fetal head from left to right. This indicator's normal range varies at different stages. At the same time, this indicator is one of the important factors for determining whether a vaginal delivery is possible. It can also be used to calculate the approximate weight of the fetus.