Color ultrasound can look at relatively stationary organs, while Doppler can look at dynamic organs. During the examination of blood vessels by color Doppler ultrasound, the hierarchical structure of the blood vessel wall can be observed, the thickness of the blood vessel wall and the inner diameter of the lumen can be measured, and the intima of the blood vessel wall can be observed to see whether there is thickening or whether there is hardening plaque, and whether the lumen of the blood vessel is dilated or narrowed.
Doppler can display blood flow in the lumen on the basis of color Doppler observation. Blood flow toward the probe shows red, and blood flow away from the probe shows blue. Doppler measures the velocity of blood flow in the lumen and can distinguish between arteries and veins.
In particular, when examining the organs, the combination of color Doppler ultrasound and Doppler ultrasound can observe the lesions of the organs. If substantial space occupation is observed in the organs, color ultrasound and Doppler can be combined to observe the size and shape of the nodules, as well as to observe whether there is blood vessel supply inside, which provides a great help for the treatment of clinicians.
