What does hc on B-ultrasound mean?

In gynecological or obstetric examination, doctors often ask women to do B-ultrasound examination. In the test results, the doctor may mention HC. HC is the abbreviation of head circumference, which refers to the head circumference of the fetus. These data can provide important information about fetal development, because fetuses with normal head circumference are usually consistent with their age. So the doctor will track the data to ensure the normal growth of the fetus.

HC is also a useful reference data for adults. Head circumference can be used as an index to measure the size of human brain and skull. However, HC data itself cannot directly prove health status. If the measurement results are abnormal, further inspection may be needed to determine whether there are any problems. For example, in the case of a baby's brain birth defect, its head circumference is usually significantly smaller than the normal level.

HC data is an important indicator for doctors and parents, which can not only detect the health status of fetuses and adults, but also judge the development form and maturity. But we also need to realize that HC is only a reference data and should not be used as the final basis for diagnosing diseases. If you are in doubt or worried, you should consult a doctor in time for a more comprehensive examination and diagnosis.