What is the difference between fetal anomaly screening and four-dimensional color Doppler ultrasound?

When it comes to the two terms "four-dimensional" and "major fetal malformation screening", they may be unfamiliar to many people, but pregnant women are very familiar with them; some people are familiar with these terms, but do not understand what they actually mean? Neither of them understands the relationship between each other.

Compared with "major fetal malformation screening", the orientation of "four-dimensional" is more clear, because it refers to "four-dimensional color ultrasound"; but what is major fetal malformation screening? What is the relationship between the two?

---First of all, what is a major fetal malformation screening? ---

Pregnant mothers all know that they should have regular prenatal check-ups. In fact, prenatal check-ups are a process of "screening for fetal anomalies". A "major fetal anomaly screening" should be done during pregnancy and mid-pregnancy. Through this test, the development of the baby in the uterus can be more clearly understood.

Ultrasonic screening for fetal malformation - also known as fetal malformation screening ultrasound.

Generally speaking, there are five stages of fetal anomaly screening during pregnancy, and the third stage is the best time to do so.

That is, between 20 and 24 weeks, an ultrasound examination is performed to understand whether the baby's growth and development in the uterus conforms to the corresponding gestational weeks, and finally observe and analyze whether the fetus's growth and development is seriously abnormal.

---Second, what are the characteristics of large-scale fetal malformation screening? ---

The fetal malformation screening test can provide three-dimensional imaging of some of the fetal organ structures and fetal attachments, which can visually display the disease from a spatial perspective and greatly increase the diagnosis rate of fetal malformations.

---Third, what is the difference between the B-ultrasound examination for major fetal malformation screening and the general B-ultrasound examination? ----

There are two methods for major fetal malformation screening, one is three-dimensional color ultrasound, and the other is four-dimensional color ultrasound; while the B-ultrasound used in routine physical examinations is two-dimensional color ultrasound.

Therefore, the biggest difference between them is the difference in their equipment. In addition, in terms of imaging, general B-ultrasound is a two-dimensional image; three-dimensional color ultrasound is a stereogram, but it is a static stereogram; four-dimensional color ultrasound is also a three-dimensional image, but it is a real-time dynamic image.

Therefore, B-ultrasound for major fetal malformation screening is more vivid, the images are clearer, and the success rate of detecting fetal malformations is higher.