Ultrasound
B-ultrasound is an observation instrument that uses ultrasound to understand the structure of the body.
B-ultrasound adopted the black-and-white ultrasound diagnosis technology at the earliest. By emitting ultrasound, the ultrasound will produce echoes when it encounters the barrier. The computer collects these echoes and converts them into corresponding images for display on the screen.
The image measured by the ultrasound probe is black and white, and only the tissue structure of the fetus can be observed, measuring the size of the head and the length of the body.
Color Doppler
Color Doppler ultrasound is not a literal "color B-ultrasound", but on the basis of ordinary B-ultrasound, color-Doppler ultrasound detection and diagnosis technology will be used to label the heart, blood flow and other indicators, which are observed by color ultrasound. The image is mainly red and blue.
This technology can observe the blood flow of the fetus, which is conducive to timely detection of fetal abnormalities. For example, if there is a blood flow loop in the neck of the fetus, it means that the umbilical cord is wound around the neck, which can cause suffocation.
Through the above explanation, we can determine that the principles of B-ultrasound and color Doppler ultrasound examinations are similar. They are both ultrasound examinations, and color Doppler ultrasound is more advanced than B-ultrasound technology. It can visually display the distribution status of blood flow and display the distribution status of blood flow. It is of great help to the identification of vascular lesions, as well as the properties of blood flow, such as speed and direction.
