Four dimensions can be done in a few months

Four-dimensional color Doppler ultrasound is generally recommended in the 5~6 months of pregnancy will be better, because this time the amount of amniotic fluid is more, fetal movement is also more frequent, help to be able to check once. Four-dimensional color Doppler ultrasound is a particularly critical row during pregnancy, help to find fetal abnormalities, such as cleft lip or limb deformity. If the results of four-dimensional color Doppler ultrasound are normal, it means that there is no big problem. During pregnancy, all prenatal examinations are more critical. You need to communicate with the doctor in time or make an appointment in advance. It is best not to miss the best examination period.