Four-dimensional abnormality is not a correct term. Four-dimensional is four-dimensional, and large abnormality is large. They are two different examination items. Let’s introduce the large-scale abnormality and four-dimensional color Doppler ultrasound respectively.

Major anomalies

System B-ultrasound is used for major anomalies. Major ablation is usually performed between 20 and 24 weeks of pregnancy. Public hospitals will arrange the procedure around 20 weeks.

Massive abnormality is mainly to check the fetal body surface and internal organ development. It is necessary to check the four strong points of the heart, bladder, kidneys, cerebellum, upper lip, gastric vesicle, tibia, fibula, ulna, radius, spine, abdominal wall, etc., as well as combined with routine examinations, to diagnose fetal malformations. Including brain development abnormalities, bone development abnormalities, digestive system abnormalities, and cardiovascular abnormalities. Urinary system malformations. Kidney development. Cleft lip and palate.

Things to note when doing major deformity removal. Four-dimensional color Doppler ultrasound.

Four-dimensional color ultrasound can be performed between 20 and 28 weeks.

Four-dimensional color ultrasound is more three-dimensional and multi-dimensional, and can clearly observe the fetal face and body surface, as well as the growth and development of the mother's belly.

Four-dimensional color ultrasound is mainly used to rule out fetal malformations. The fetus shown in the four-dimensional color ultrasound is dynamic and three-dimensional. It can leave an image record for the fetus.

But three- and four-dimensional imaging technology is still under development. Two-dimensional systems cannot yet be replaced among fetal screening application technologies.

Therefore, if you choose 1 out of 2, you must choose major ovarian cancer. If financial conditions permit, and you also want to leave a record for your baby before birth, you can do both.

Therefore, you can still have a four-dimensional color ultrasound at 28 weeks of pregnancy.

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Many pregnant mothers have heard that four-dimensional deformity is required at 24 weeks of pregnancy, because at this time the various organs of the fetus have been formed and the size of the fetus is also very suitable. However, this does not mean that this is not the case. After 24 weeks, for example, 26 weeks, can’t I do four-dimensional surgery? Let’s take a look below!

(Pictures from the Internet)

In fact, four-dimensional ablation can be performed within 22 weeks to 28 weeks of pregnancy. At this time, the amount of amniotic fluid in the pregnant mother's uterus is also the most appropriate. , the fetus has enough space to move freely inside, and it is relatively clear during inspection. If it is earlier than this time period, the fetus will not only be small, but also the organs of the body are not fully developed. Massive abnormality is one of the most careful ovarian abnormalities examinations during pregnancy. If the structure of the fetus cannot be clearly seen, then it is better to The meaning of eliminating abnormalities is lost.

Therefore, you can go for four-dimensional deformity removal at the 26th week of pregnancy. However, current hospitals require an appointment to do four-dimensional deformity removal. Pregnant mothers can go to the local tertiary hospital for consultation. The doctor helps arrange the time for the examination.

Written at the back: Many pregnant mothers don’t know whether they should fast before having a four-dimensional major excretion. In fact, pregnant mothers do not need to fast for a four-dimensional major excretion. In order to prevent the fetus from being starved for a long time. Movement affects the examination. It is best for pregnant mothers to eat before going, or to eat a small dessert before the examination. On the day of the examination, wear separate clothes to facilitate the examination.

Major ovarian abnormalities can be performed at 26 weeks of pregnancy, but major ovarian abnormalities do not necessarily require four dimensions.

Major ovarian abnormality examination

Major ovarian abnormality examination is to check for malformations that may occur during fetal development. It is usually performed between 20-28 weeks of pregnancy. At this time, the fetus' facial features and body are more fully developed, and it is easier to detect developmental malformations of the fetus' facial features, limbs, spine, internal organs, etc., such as common neural tube defects, cleft lip and palate, spinal abnormalities, limb deformities, etc.

It is not necessary to choose four-dimensional examination for major abnormality.

For the examination of major abnormality, ordinary two-dimensional examination is completely adequate. It is the basis for judging fetal malformations.

Three-dimensional and four-dimensional images are actually converted into static or moving images that are easy for us to recognize on the basis of two-dimensional images. For pregnant mothers, they are more convenient and intuitive, but the essence is the same.

Therefore, pregnant mothers do not have to pursue four dimensions. The same is true for two-dimensional anomalies. However, some pregnant mothers are curious about the appearance of their babies and can choose according to their own circumstances.

Precautions for malformation examination

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Four-dimensional deformity can be performed at 26 weeks of pregnancy. The best time for major deformity is 22 to 26 weeks. However, some fetuses develop slowly, so it can also be done at 28 weeks. This is the case for my second child. I could clearly see the major ovarian abnormalities at 28 weeks.

Can I still undergo four-dimensional ovulation at twenty-six weeks of pregnancy?

Today’s prenatal check-ups generally use the four-dimensional method to see more clearly. In some underdeveloped areas, two-dimensional or three-dimensional methods can sometimes be used to see clearly, but the examination for large-scale abnormalities must be done. of.

The major malformation examination will screen the fetus’s hands (excluding fingers), feet (excluding toes), facial features and heart structure in the second trimester. The reason why this time is chosen for the examination is mainly to screen the fetus for surface defects, such as cleft lip and palate, spinal abnormalities, heart failure, etc., which can all be screened out during this examination.

What should you pay attention to before having a major deformity examination?

Major abnormality examinations require an appointment in advance. Generally, doctors will recommend making an appointment in advance during the examination. Make sure to remember the time and go on time. There is no need to fast before the examination. On the contrary, it is easier to pass the examination after eating. My second child went there after eating, and the inspection was completed in less than half an hour. If you are worried about poor fetal movement, you can prepare some snacks or juice to help the fetal movement improve.

In short, you can have a large-scale abnormality examination at 26 weeks of pregnancy. You can choose four-dimensional, three-dimensional, or two-dimensional. But you can’t delay it any longer. If it’s too late, it may not be clear due to the fetal position or the amount of amniotic fluid.

Major ovulation can be said to be the most important event in the entire prenatal check-up process. It can conduct a comprehensive observation of the fetus, including the nervous system, various organs in the thorax and abdomen, and the development of the limbs and body surface. It can be said that basically every organ and every tissue can be observed. .

However, large anomalies and four dimensions are not the same thing. Generally speaking, the examination of major abnormalities is carried out under three-dimensional color Doppler ultrasound. To observe the baby's development, three-dimensional color Doppler ultrasound is completely sufficient, and four-dimensional ultrasound has no place at all.

Then why do people like to advocate four-dimensional color Doppler ultrasound now?

It’s very simple, because four-dimensional color ultrasound has another function, that is, it allows you to see the prototype of the baby’s whole body, and that’s it.

And when is the best time for a major orthopedic examination?

The recommendation in the book is between 20 and 24 weeks, but clinically it is generally recommended to conduct a major malformation examination between 22 and 25 weeks. This is because the baby will look clearer as he gets older.

However, it cannot exceed 26 weeks at the latest. This is because if the baby grows too big, it will not be able to turn over in the womb. If it cannot turn over, we will not be able to observe it too thoroughly.

First of all, we need to know that four-dimensional and major abnormality are two different definitions. Four-dimensional is ultrasound, which can be done at any time, but the price is more expensive, and ordinary B-ultrasound is usually used for prenatal examination. Massive malformation is the screening of fetal malformations through ultrasound at a specific time, and the time is tight.

Can I still undergo four-dimensional major ovulation at 26 weeks of pregnancy?

At 22-28 weeks of pregnancy, the doctor will arrange for the pregnant mother to have a four-dimensional color ultrasound to detect abnormalities, but the best time is 24 weeks. If you miss the examination at 26-28 weeks, it is okay.

Because the brain develops most rapidly when the fetus develops to 24 weeks, and the fetal body structure has been formed at 24 weeks of pregnancy, the size of the fetus and the amount of amniotic fluid are relatively consistent, and the fetus is in the mother’s belly. The activity space is relatively large, and the bone echo interference is relatively small.

Therefore, the image generated by a four-dimensional color ultrasound at 24 weeks of pregnancy will be clearer. If you miss it or make an appointment at 26 weeks of pregnancy, it is still possible, as long as it is done before 28 weeks of pregnancy.

What is four-dimensional color ultrasound?

Four-dimensional color ultrasound has all the functions of three-dimensional color ultrasound, and adds time dimension parameters on the basis of three-dimensional color ultrasound images, allowing real-time observation of fetal dynamic moving images. Through the four dimensions, we can see whether the fetus has congenital heart disease, cleft lip and palate, hydrops, external ear and other malformations.

So, when four-dimensional color ultrasound is performed at 22-28 weeks of pregnancy, we also call it four-dimensional major abnormality. In the future prenatal check-ups, we will not need to take four-dimensional ultrasound, ordinary three-dimensional B-ultrasound will suffice.

Can I still undergo four-dimensional ovulation at twenty-six weeks of pregnancy?

Four-dimensional color ultrasound is the most important examination item during the entire pregnancy, and it is also a must-do examination during pregnancy, so pregnant mothers must pay attention to it and remember not to miss the best time.

When is the best time to do a four-dimensional color ultrasound?

The questioner asked whether the four-dimensional test can still be performed at 26 weeks. It should be because there is no screening for fetal malformations at 24 weeks, so it is recommended that pregnant mothers still go to the hospital for examination and not wait too long to avoid Miss the best screening period.

After all, the fetus is a continuous development process, and it needs to be monitored continuously. You may not find any problems at this stage, but it does not mean that there will be no problems at the next examination, so you must have prenatal check-ups on time to ensure fetal development. The situation is normal.

What preparations need to be made for a four-dimensional color ultrasound? In short, it is recommended that pregnant mothers go to the hospital for a prenatal check-up in the early stages of pregnancy for the first time to consult relevant checks and determine the next check-up time, so as not to miss the best check-up time and affect Fetal development.

Four-dimensional abnormality is not a correct term. Four-dimensional is four-dimensional, and large-scale abnormality is two different examination items