The difference between ordinary B-mode and 3D/4D color ultrasound

Many pregnant mothers have this confusion: What is B-ultrasound? What is color ultrasound? What is a 3D color ultrasound? Four-dimensional ultrasound? What are the connections and differences between them? From the beginning of pregnancy, expectant mothers will gradually come into contact with these types of examinations. It is not acceptable to understand their meanings and differences! Now use the popular language to popularize pregnant mothers!

What is B-ultrasound?

B-ultrasound is an observation instrument that uses ultrasound to understand the structure of the body. The principle is simple. It is to transmit ultrasonic waves. Ultrasound is also a kind of sound. It has the ability to penetrate, and like all sounds, the barrier will produce echoes, and the different barrier echoes will be different. So use computer to collect these. The echo is converted into a corresponding image and displayed on the screen to observe the internal organs and the like.

Does B-ultrasound harm your baby?

Many expectant mothers worry that doing B-ultrasound will be unfavorable to the fetus in the abdomen, but the pregnancy check should generally be at least 3-5 times. In fact, the use of B-ultrasound for regular medical examination is absolutely harmless to the fetus.

In theory, placing the B-ultrasound probe in the embryo position for more than 15 minutes in the first trimester may have an impact on embryonic development, but the regular examination will not last for so long, and the first three months of development In the meantime, ultrasound is harmless to the fetus, and it is less likely to be harmful to hearing, because the ultrasound transmitted by B-ultrasound is a range that cannot be detected by the human body. There is no such thing as "radiation". How does the sound have "radiation"? Only the computer on the B-ultrasound machine may have "radiation", and now the home computer is not the enemy of pregnancy, let alone contact the computer for a short time.

What is color ultrasound? 3D color ultrasound? Four-dimensional ultrasound?

Color Doppler is not a "color B-ultrasound" that is literally understood. Color Doppler is actually black and white. It is called color ultrasound because it uses color to mark the heart, blood flow and other indicators. The resolution of the color ultrasound will be higher than that of the general black and white B, so when more detailed examinations are needed, more doctors are willing to check through the color ultrasound. And because the blood flow can be marked in color, when the umbilical cord around the neck, you will see a U-shaped or W-shaped blood flow on the baby's neck. It is clear to the umbilical cord around the neck.

The images of 3D color ultrasound and 4D color ultrasound are generated later. It is not that the observed images are three-dimensional or four-dimensional, but they are still observed with ordinary color ultrasound, and then the observed planar images are converted into three-dimensional by the conversion software in the instrument. , four-dimensional stereo image. To put it more straightforward, if you put similar software on your home computer, you can convert the ordinary B-mode image yourself at home. In the sense of diagnosis, three-dimensional, four-dimensional does not have any place that is more favorable for diagnosis, but only those who do not know the B-ultrasound image can see it. The point is that you can see the baby's three-dimensional appearance in the belly.

What is the difference between ordinary B-mode ultrasound, color ultrasound and 3D and 4D color ultrasound?

It can be understood that the ordinary B-mode is like a black-and-white photo, while the color B-mode is like a color photo, the 3D B-mode is like a stereo color photo, and the 4D B-mode is like a VCR taken by a camera.

Both the ordinary B-mode and the color B-mode are only a plane, while the three-dimensional and four-dimensional B-modes see a stereo image of the fetus. What is the difference between 3D and 4D? It's just a "time dimension." In general, 3D is like a picture, and 4D is like a video. Three-dimensional is static, while four-dimensional is dynamic, you can see the baby's series of actions.

In the technical age, the birth period of B-ultrasound and ordinary color ultrasound is relatively long, but it is also the most basic and most commonly used ultrasonic inspection technology. The three-dimensional and four-dimensional color ultrasound is a new type of ultrasonic technology that has been gradually developed in recent years, and has a great relationship with the precision of equipment and instruments. The four principles are the same in medical principles. The essence is to use ultrasound reflection imaging to check. The only difference is that the imaging results are different. Of course, the cost is also very different: ordinary B-ultrasound is the cheapest, color is super-second, and 3D is Second, the four dimensions are the most expensive.

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