four-dimensional color Doppler ultrasound examination

Four-dimensional color Doppler ultrasound belongs to a kind of fetal dynamic examination method, that is, on the basis of three-dimensional examination, it can also see dynamic changes with time, which can more clearly reflect the fetal situation. Normal women in pregnancy 20~28 weeks, after doing four-dimensional color Doppler ultrasound forehead can find whether the fetus has hydrocephalus, limb loss, cleft lip and some congenital heart disease and other developmental abnormalities. Four-dimensional color Doppler ultrasound is an examination method carried out by ultrasound and Doppler imaging. The effect of four-dimensional color Doppler ultrasound examination will also be affected by the position of the fetus. If the position is not good when doing the examination, it is necessary to wait for the fetal transposition to observe, so the time to do four-dimensional color Doppler ultrasound examination will be longer, normally more than half an hour.