Is 2D fetal anomaly screening reliable?

In the early stages of pregnancy, expectant mothers go to the hospital for a checkup to rule out malformations, namely, a fetal malformation check. So, can two-dimensional color ultrasound detect abnormalities? What is the difference between two-dimensional color ultrasound and three-dimensional color ultrasound? Under what circumstances should you do lottery? Most people don't understand this problem, so I will give you a brief introduction below.

Can two-dimensional color Doppler ultrasound detect fetal abnormalities?

In addition to the genetic causes of the deformity, the deformity is also caused by external factors. Generally speaking, the deformities caused by genetic factors are very low and can be basically eliminated. The biggest factor causing malformations including congenital heart disease is early pregnancy - getting a viral cold within the first three months of pregnancy is the most likely to cause malformations. There is no effect after taking one tablet of metoclopramide. Down syndrome screening is only used as a reference and is basically not taken into consideration. B-ultrasound and two-dimensional color ultrasound can basically determine whether there is any deformity, but there is generally no need to do color ultrasound, because B-ultrasound examination is necessary, unless there is a fever or cold in the early pregnancy, doing a B-ultrasound will make you feel more at ease.

The difference between 2D and 3D color Doppler ultrasound

If you just want to watch your child's growth, a 2D ultrasound will be enough, or even a very simple black and white ultrasound will be enough, but each B-ultrasound function is different. Black and white are great for looking at size, appearance, spine, and so on. 2D B-ultrasound can detect blood data signals and can tell how many weeks the fetal umbilical cord has been around the neck.

The three-dimensional ultrasound can restore the baby's approximate appearance, and can take more vivid photos as souvenirs for parents who don't know how to look at B-ultrasound photos. In addition, the three-dimensional color ultrasound has a fetal malformation screening function around 24-28 weeks. At that time, the baby's skin is transparent, and the three-dimensional ultrasound can be used to see whether the heart and internal organs are complete, and whether there is a cleft lip or something like that. Some hospital outpatient clinics call fetal abnormality screening ultrasound 4D B-ultrasound. If you are very confident about your baby, 3D is not necessary. In addition, a general 3D ultrasound needs to be booked one month in advance, because a general B-ultrasound only takes more than ten minutes, while a 3D ultrasound takes about 30 minutes or more, and requires more powerful equipment. From the perspective of the adverse effects of thermoelectric effect on babies, three dimensions are greater, two dimensions are second, and black and white are the safest.