Where does Changchun do color Doppler ultrasound? Low fees?

The best time for four-dimensional color Doppler ultrasound is 22-28 weeks (2-4 weeks as far as possible). This period is a teratogenic period because the fetus is small, the amniotic fluid is moderate, the fetal activity is high, and the body surface is full, which is conducive to fetal four-dimensional ultrasound imaging and screening fetal abnormalities. It is recommended to choose a regular hospital to make an appointment in advance.