What the ultrasound Scanner is color?

Are ultrasounds in color?

Patients or their family members will always ask: “Is this a color Doppler ultrasound? Why is it like black and white?” Many people think that a color Doppler ultrasound should be like a color TV, with red and green colors, colorful, and people and things can be seen at a glance. Once a patient sees a black-and-white image, he wonders if the doctor is giving him a black-and-white ultrasound, which is not the case.

Color Doppler ultrasound, also known as color Doppler ultrasound, is simply a high-definition black and white B-ultrasound plus color blood flow imaging. Therefore, color Doppler ultrasound is only based on black and white ultrasonography plus blood flow imaging in blood vessels. Color here refers to “vascular blood flow”. Everything else is black and white, but the black and white of color Doppler ultrasonography is clearer and has higher resolution than black and white ultrasonography. Higher, like two black and white TVs, one clear and one not (like a lot of snow on the screen).

Color blood flow imaging is to display the blood flow changes in the form of pseudo-color coding of the received blood flow signals. Generally, the blood flow towards the probe is set as red, and the blood flow away from the probe is set as blue, that is to say: We only use color Doppler when we need to understand the blood flow. Only at this time will colors appear on the screen, mostly red and blue. When there is turbulent flow, multicolored colors will appear on the screen. .

Color Doppler ultrasound not only has the advantages of two-dimensional ultrasound structural images (B-ultrasound), but also provides rich information on hemodynamics.

Therefore, in the process of doing color Doppler ultrasound, the images we see or even print are not all colored, but the blood vessels in them are colored.