Usually composed of probes (phased array, line array, convex array, mechanical fan sweep, 3D probe, endoscopic probe, etc.), ultrasonic transmit/receive circuits, signal processing and image display. Using ultrasound Doppler technology and ultrasonic echo principle, simultaneous collection of blood flow, tissue information and human organ tissue imaging equipment.
First, color Doppler ultrasound generally uses autocorrelation technology for Doppler signal processing, and the blood flow signal obtained by the autocorrelation technique is color-coded and superimposed on the two-dimensional image in real time. That is to say, color Doppler ultrasound blood flow image is formed.
Second, the related technology adopted by color ultrasound is pulse wave. When the speed of the detection object is too high, the color of the color flow will be wrong, and the quantitative analysis is obviously inferior to the spectrum Doppler. Today, the color Doppler ultrasound system has spectrum Doppler Le's function, that is, color - dual-function ultrasound.
Third, color Doppler flow imaging (CDF), also known as color Doppler ultrasound imaging (CDI), it obtains the source of echo information and spectral Doppler consistent, blood flow distribution and direction in two-dimensional display, Different speeds are distinguished by different colors. A dual-function Doppler ultrasound system, which is a B-mode ultrasound image showing the location of a blood vessel. Doppler measures blood flow, and this combination of B and Doppler systems can more accurately locate any particular blood vessel.