32 weeks of pregnancy, how much is normal?

32 weeks pregnant double top diameter how much normal? Pregnancy 32 weeks biparietal diameter between 78 and 89 are normal, if the biparietal diameter is less than 78 but also measure the baby's head circumference, head circumference is normal, this situation is only the baby's head shape is not very good, is a strip, oval head, if the baby's head shape is normal, head circumference is normal, biparietal diameter is normal, this situation indicates that the baby's head size development is normal, if the baby's biparietal diameter is small, head circumference is also small, this situation is afraid of microcephaly, Show this kind of situation must check toxoplasma gondii infection, to do fetal magnetic resonance screening baby brain tissue structure development is abnormal.