What does pregnancy mean by four dimensions?

Pregnant women need to do four-dimensional color Doppler ultrasound examination. Four-dimensional color Doppler ultrasound examination is a relatively advanced examination method. This examination method can record the fetal development seen in the examination process into a CD. Whether the ultrasound doctor or the pregnant woman or her family, they can observe the baby's development and fetal motor function through the CD. Due to the accuracy and reliability of the examination results, it is widely used in obstetric fetal development screening. For fetal body surface development, visceral development and motor function development, it can make a more accurate diagnosis. When doing four-dimensional color Doppler ultrasound screening, it is generally performed between 20-28 weeks of pregnancy. The best time is between 22-26 weeks of pregnancy. You can make an appointment for the examination 2-4 weeks in advance.