What are the differences between NT, color ultrasound and B ultrasound taken by pregnant women during pregnancy?

What are the differences between NT, color ultrasound and B ultrasound taken by pregnant women?

Pregnancy check-up is the most important thing for every pregnant mother, but there are too many items in the whole pregnancy check-up, and many pregnant mothers can't tell the difference between NT, color Doppler ultrasound and B-ultrasound. Today, let's talk about the difference between the three!

1, NT

NT examination is mainly the scanning of the zona pellucida behind the fetal neck, which is a method to evaluate whether the fetus may have malformation in the first trimester.

NT refers to a transparent liquid existing in the fetal neck. Generally speaking, NT only exists during the period of 11 weeks to 14 weeks.

after p>14 weeks, the NT in the fetal neck will be absorbed by the lymphatic system in the fetal body, and the existence of NT cannot be observed by examination.

The purpose of NT examination is to judge whether the fetus has Down syndrome or malformation according to the NT value in the test results. If the NT value is too high, the fetus may suffer from these two diseases.

2. Color Doppler ultrasound

Color Doppler ultrasound examination can clearly see the baby's moving image in the mother's stomach, and can also show the baby's body organs and development to some extent, so the items of color Doppler ultrasound examination can see the baby. Is the development normal?

It is also possible to check whether the child has congenital diseases by seeing whether the child has limb deformities or visceral deformities.

Through color Doppler ultrasound examination, we can also check whether the fetus has spina bifida, cleft lip and brain hypoplasia.

Therefore, color Doppler ultrasound examination is mainly to exclude fetal congenital diseases and malformations.

3, B-ultrasound

B-ultrasound is a very common ultrasonic examination method, which is generally used by doctors to assist in examining various organs in the human body.

During pregnancy, B-ultrasound is used to check the development of the fetus, the shape of fetal organs, amniotic fluid and placenta, and three-dimensional or four-dimensional ultrasound technology is added to B-ultrasound to check whether the fetus is abnormal.

NT examination is also conducted by means of b-ultrasound, and whether it is NT examination, color ultrasound, four-dimensional color ultrasound and three-dimensional color ultrasound, it is based on b-ultrasound.

Therefore, NT examination is also entered through B-ultrasound examination. Therefore, there is no difference between B-ultrasound examination and NT examination in terms of examination methods.