Abstract
Color Doppler imaging method can describe the blood flow information two dimensionally in real time.
Pulsed wave Doppler method is commonly used in the field of examination in neurosonology. Pulsed wave Doppler method detects the Doppler signal from a small volume (sampling volume) selected at a specific depth.
Color Doppler imaging method expresses the date of each partial blood flow velocity for many points in color, and displays these color-coded data over the cross-sectional image. The color represents the average of flow velocity components that are included at each point. Because two dimensional blood flow information is obtained in the color Doppler imaging method, it is possible to detect an un-expected blood flow and to be aware of the spatial distribution of the blood flow.
New display methods are now available for whole-body color Doppler applications. These new display methods are; “Color Persistence”: to display a persistent image of the blood flow. “Color-angio”: to display the power of the Doppler signal. “3D Color Perspective”: to display the continuity of the blood vessels three-dimensionally.
