What is the difference between nt and 4D, and what is the difference between NT and 3D?

Fetal NT examination is to check the thickness of the posterior cervical translucency layer of the fetus, which is an early Tang screen, simply put, whether the fetus has neural tube defects and other conditions, whether there are mental disabilities and other malformations, which is examined by a four-dimensional machine, and the time of examination is between 11 weeks and 14 weeks;

Four-dimensional color ultrasound is the deformity of the fetal morphological structure, which is to see whether the fetus has rabbit lips, limb mutilation, anencephaly, intestinal exstrophy or whether the heart structure is well developed. The four-dimensional examination time for a single fetus is between 20 and 28 weeks, and the examination time for twins is between 20 and 24 weeks.

NT examination is an ultrasound detection of the thickness of the posterior nuchal translucency of the fetus, the normal value does not exceed 3mm, and the examination is carried out at 11-14 weeks of pregnancy, which belongs to Down screening during pregnancy. Four-dimensional color ultrasound examination needs to be examined at about 24 weeks of pregnancy, which can rule out abnormal fetal development.

Generally, NT examination is carried out at 11 to 14 weeks of pregnancy, NT belongs to the early Down's screening, it is to do color ultrasound examination to see the thickness of the transparent septum, four-dimensional color ultrasound examination can better see the development of the fetus, it is generally recommended to check at 22 to 28 weeks of pregnancy, it is two different examinations, different examinations need to be done at different stages of pregnancy to observe the development of the fetus, it is recommended that you have a regular prenatal examination, closely observe the development of the fetus, During pregnancy, pay more attention to rest, do not work too hard, and also strengthen nutrition.

The four-dimensional color ultrasound has good intuitiveness and clear images, which can better detect deformities. The best time for 4D color ultrasound varies from person to person, and the results obtained from 4D color ultrasound will be different at different times.

NT is a soft ultrasound index used in clinical practice for early screening of fetal abnormalities. It is usually measured by ultrasound between 11 and 14 weeks of gestation. NT test is the first fetal deformity test to be started, and current studies have shown that 60-70% of fetal chromosomal abnormalities and about 10% of fetal anatomical abnormalities can be screened according to NT as an indicator.

NT nuchal translucency is the posterior nuchal translucency test, which uses B-ultrasound to measure the thickness of the posterior nuchal translucency of the fetus at 11 and a half weeks to 13 and a half weeks to measure the risk of fetal chromosomal abnormalities.

NT and three-dimensional color ultrasound, there is a certain difference, NT examination can be used to check whether there are abnormalities in the chromosomes of the fetus in the womb of pregnant women, and whether the fetus has malformations, and three-dimensional color ultrasound examination is mainly to observe the development of various organs of the fetus, each examination has different effects, pregnant mothers should regularly go to the hospital for prenatal examination, so as to grasp the growth and development of the fetus at any time.

The four-dimensional ultrasound costs 300-500, which can dynamically and continuously display the activities of the fetus in utero, show that the surface structure of the fetus is three-dimensional and complete, safe and simple without damage, and can be repeatedly examined. It can also observe the growth and development of the fetus in utero from multiple directions and angles, and examine the body surface of the fetus, such as cleft lip, spina bifida, brain, kidney, heart, and bone dysfunction, etc., so as to provide an accurate scientific basis for the early diagnosis of congenital body surface deformities and congenital heart diseases of fetals.

Hello, if you are pregnant, do NT color ultrasound at 12 weeks, this is also a kind of exhaust test, it is a detoxification nerve examination, 24 weeks four-dimensional color ultrasound, is also a kind of exhaust examination, 24 weeks can see the fetal limbs, should be a test to rule out limb deformities. There must be a difference, it is not the same kind of examination, if the conditions allow, of course, it is best to do all these examinations.

There is more experience here, and the specific ** according to the degree and material selection is different, you can first face the doctor and then formulate a plan.

NT is a deformity examination in the early stages of pregnancy, and this is not three-dimensional. It is to check the thickness of the nuchal translucency of the fetus, which is done at 11-13 weeks, which is different from the general B-ultrasound.

Tang sieve and NT must be done, mainly to measure the early fetal deformity and the incidence of Down syndrome. Four-dimensional ultrasound has a real-time dynamic effect on the basis of three-dimensional ultrasound, and expectant fathers and mothers-to-be can witness the baby's physiological activities such as movement, breathing, swallowing, yawning, and tongue sticking out in the mother's belly through the screen, which is very intuitive.

It's up to you. If you say that there is no abnormality in the ultrasound you have done before, that you have not taken special teratogenic drugs, and that you have not been exposed to radioactive materials, you can choose not to do it.

NT color ultrasound refers to the nuchal translucency of the fetus, which examines the thickness of fluid accumulation in the subcutaneous tissue of the back of the fetal neck, and uses this to determine whether the fetus has chromosomal diseases and other abnormalities caused by other reasons, such as hydrocephalus, fetal spina bifida, etc. The best time to do 4D color ultrasound is 20-28 weeks of pregnancy, because the fetus's limbs and major organs have all developed during this period, and amniotic fluid is more suitable for fetal malformation screening.

B-ultrasound is a sound wave, not X-ray or the like, which does not affect the development of the fetus, and it is common to need to do B-ultrasound 5 to 8 times throughout pregnancy. Four-dimensional color ultrasound is the most advanced fetal examination equipment, which is the best choice to systematically check whether the fetus is healthy, and can dynamically record the whole process of the baby's growth in the mother's body, so that the expectant father and mother-to-be can work together to ** the baby's activities in the uterus.

No, NT is a more important examination in the first trimester, B ultrasound and color ultrasound are two-dimensional, three-dimensional is a three-dimensional static image, and four-dimensional is a three-dimensional dynamic image.