Color Doppler is a technique utilized to identify and track the movement of blood flow by employing a color map integrated into a standard format B-mode image. This method effectively detects and examines a wide expanse of both blood flow and regions, often represented by shades of blue and red. Additionally, it has the capability to discern whether the blood is moving toward or away from the transducer.
In this process, the frequency shift is approximated at every point where motion within the examined region is detected. As a result, valuable insights regarding the velocity and direction of motion are derived. The hues of blue and red are employed to indicate the relative speed of blood flow, while objects at rest are depicted in shades of gray through B-mode imaging.
The advantage of employing color Doppler lies in its ability to furnish information about the direction and relative velocity of blood flow. However, it is important to note that the effectiveness of color Doppler is influenced by the angle at which the transducer is positioned in relation to the flow of blood.