Generally speaking, pregnant mothers can intervene as soon as possible if they are found early and the fetal malformation is not serious. The best time to do four-dimensional color Doppler ultrasound is 20-22 weeks. During this period, the fetal body structure has been formed, and the amniotic fluid and fetus are of moderate size. Under B-ultrasound, pregnant parents and pregnant mothers can see the whole baby. If the baby is too young for a week or two, it is a waste of time to take a trip because it is too young to see clearly. Pregnant mothers can also postpone going to the hospital for four-dimensional color Doppler ultrasound for a week or two, preferably not more than 28 weeks. Four-dimensional color Doppler ultrasound can let pregnant parents have a complete picture of their baby at the age of 0, and it can also be used as a souvenir in the future, which is why pregnant parents choose to do four-dimensional color Doppler ultrasound.
Let me give you an injection. What is the difference between two-dimensional ultrasound, three-dimensional ultrasound and four-dimensional color ultrasound?
Two-dimensional ultrasound is a plane we often see, while three-dimensional ultrasound adds more blood flow on the basis of two-dimensional, and four-dimensional ultrasound actually adds a time dimension to the three-dimensional ultrasound image; Four-dimensional color Doppler ultrasound not only looks at the growth and development of the fetus, but also looks at the structure of the fetal heart and the three-dimensional construction of a heart. When doctors photograph blood flow with Doppler color Doppler ultrasound, they can see the blood flow and the opening of the valve formed by the doctor's three-dimensional conformation.
Therefore, don't think that four-dimensional color Doppler ultrasound is omnipotent because of its exaggerated propaganda. In addition, it is not recommended that pregnant mothers do four-dimensional color Doppler ultrasound before 3 months of pregnancy.