On that day, a telephone call was received at the maternity clinic。
"please, do you have a check at your place
"no, we only have three dimensions."
"yo, this big hospital, it doesn't even have a four-dimensional lottery, it's still 3-gauge."
There's a grumpy tone on the phone: "i'm not going up there to have a baby. I'll go to a private hospital."
As a result, the pregnant woman chose a private hospital。
Usually, pregnant women are also often asked such questions in room b。
"doctor, are we doing four-dimensional colours? Can we take a picture of the baby?"
And the question is, "you've only got three-dimensional colours, don't you think
Some of the worst private hospitals, using four-dimensional lottery as a marketing tool, are advocating a four-dimensional lottery that is more accurate than three-dimensional colours, making our doctors laugh. So, from 1d to 4d, is it true that ultrasound is the higher the degree of accuracy
It was only in the early 1960s that china began to popularize the a-type ultrasound method, i. E., a one-dimensional ultrasound, which shows only the echo bands of different organizations and does not see the visualization of specific organs. As a result, the accuracy rate is low。
By the 1970s, china had introduced the type b ultrasound method, which is two-dimensional ultrasound, two-dimensional intuitive visualization of the baby’s organs, with high accuracy, and low examination costs, so that until now, two-dimensional ultrasound remains the main method of diagnosis of maternal ultrasound。
Now, the three-dimensional ultrasound technology is re-imaging on the basis of two-dimensional ultrasound and re-engineering with two-dimensional ultrasound images. The quality of the two-dimensional images is therefore good and bad, which directly affects the effects of three-dimensional imaging。
Some pregnant women are overly superstitious about 3d b. The advantage of three-dimensional b superpowers is to present the image, face and movement of the foetus in a very realistic way, allowing people to understand images more clearly and easily. However, three-dimensional b is a computer technology, which sometimes produces super-images, creating false images. In other words, 3-d b is not necessarily “real”. In obstetrical clinics, the diagnosis of foetal abnormalities still relies mainly on 2d b。
The latest four-dimensional ultrasound is the addition of a time axis based on a three-dimensional ultrasound, i. E. A dynamic three-dimensional imaging, and thus a two-dimensional ultrasound. In medicine, the three-dimensional lottery can well meet the need for deformation, because the four-dimensional ceremonial ceremonial is, in general, an additional video that is not understood by the general public, but at a much higher cost。
So, is it more accurate to be 3d or 4d ultrasound? The first thing pregnant mothers need to know is that the purpose of the pre-natal ultrasound is to discover whether the fetus is deformed, not to see if the baby's face is low. Pretty isn't pretty。
In addition to the requirements for ultrasound devices, the accuracy of prenatal diagnosis is more important to see the experience of doctors, including the situation of the pregnant woman herself, the number of days during pregnancy, the quantity of water, the thickness of the abdominal wall of the pregnant woman, the type of foetal malformation, the position of the foetus, the time spent on the examination, etc., which can affect the accuracy of the examination, not three or four-dimensional is better than two-dimensional。
Generally speaking, in our hospital, 3d ultrasound is only an auxiliary means of examination when the 2d routine ultrasound is unusual. Examples include diagnosis of uterine malformations, detection of polyseptic ovaries and ovaries, high-risk foetal ultrasound, foetal heart ultrasound, etc. These tests are used as auxiliary diagnostics to the conventional 2d ultrasound and do not replace the 2d ultrasound examination, and all patients or pregnant women are required to perform three or four-dimensional imaging based on a 2d ultrasound diagnosis。
For example, when a 2-dimensional ultrasound is examined, we find that the foetus has a lip fracture, so that we can use a 3-dimensional ultrasound imaging to obtain a three-dimensional three-dimensional image of the foetus's lip, so that pregnant women and their families can understand more intuitively the extent of the damage caused to the lip. However, if the doctor is not of a high standard and the image is not accurate during the 2d examination, it is a three-dimensional b super and a three-dimensional imaging can produce some hypocrisy。
So, sometimes, i also often persuade people not to superstition machines, but to trust more。
As far back as 2000, the international society for gynaecology and obstetrics ultrasound issued a special statement on “fotal ultrasound” and a warning on commercial fetal ultrasound. Therefore, although ultrasound is safe for the foetus, unnecessary ultrasound should be avoided。
