The biggest difference between the 4 ultrasound machines

What's the difference between B ultrasound, color Doppler ultrasound, three-dimensional color Doppler ultrasound and four-dimensional color Doppler ultrasound?

B ultrasound, also known as two-dimensional ultrasound, is divided into two types: black and white and color. The principle is very simple, is to launch ultrasound in the body, ultrasonic is one of the sound, has the ability to penetrate, and like all the sound, the barrier will produce echoes, different ways of the barrier echo is different, using the computer to collect these echoes, transformed into the corresponding image on the screen display.

the difference between colour and black and white B Color Doppler ultrasound is actually black and white, and three-dimensional, four-dimensional color Doppler ultrasound in making three-dimensional, four-dimensional images when it is possible to be yellow, not color Doppler ultrasound is color. It is called color Doppler ultrasound because it is used to label heart, blood flow and other indicators.

1、Hemodynamics

Color Doppler ultrasound is simple to say that high definition black and white B ultrasound plus color Doppler, not only has the advantages of two-dimensional ultrasound structure image, but also provides abundant information of hemodynamics, and can accurately reflect the characteristics of the blood flow in the physiological and pathological state of each organ.

2、a more detailed body surface examination

The four-dimensional color ultrasound can observe the growth and development of intrauterine fetuses in multiple orientations and angles, providing an accurate scientific basis for the early diagnosis of fetal congenital surface malformations and congenital heart diseases. In the past, B ultrasound equipment could only check the physiological indicators of the fetus, and the four-dimensional color Doppler ultrasound can also check the fetal body surface, such as cleft lip, spina bifida, brain, kidney, heart, skeletal dysplasia, etc., in order to treat as soon as possible.

3、 whether the umbilical cord is more clear around the neck

The resolution of ultrasound will be slightly higher than that of black and white B. Therefore, when more detailed examinations are required, more doctors are willing to check through color ultrasound. E.g:

Because color ultrasound can label blood flow in color, when the umbilical cord is wrapped around the neck, it will see U-shaped or W-shaped blood flow on the baby's neck, and it will be clear if the umbilical cord is wrapped around the neck.

Ordinary ultrasound diagnosis of umbilical cord winding, only to observe the formation of the trace of the pressure trace, but often not missed diagnosis of the trace is not obvious, so the color Doppler ultrasound can judge more.

The difference between ordinary Color Doppler Ultrasound and three-dimensional Color Doppler Ultrasound , four-dimensional Color Doppler Ultrasound

The three-dimensional color Doppler ultrasound and four-dimensional color Doppler ultrasound images are generated at a later stage. It does not mean that the observed image is three-dimensional or four-dimensional, but is still observed with ordinary color Doppler ultrasound, and then the observed planar image is converted into three-dimensional or four-dimensional stereoscopic image by the conversion software in the instrument  to enables people who do not understand B-mode images to see the appearance of the fetus.

The difference between  three-dimensional color  Doppler ultrasound and four-dimensional color Doppler ultrasound

The difference between the three dimensional color Doppler ultrasound and the four dimensional color Doppler ultrasound is in a "time dimension", that is to say, the three-dimensional color Doppler is a picture, the four dimensional color Doppler is a video, which can let the pregnant mother see a series of movements of the fetus.