1776196

Color Doppler ultrasound (also referred to as color flow ultrasound) is a technique for visualising the velocity of blood within an image plane. A color Doppler instrument measures the Doppler shifts in a few thousand sample volumes located in an image plane. For each sample volume, the average Doppler shift is encoded as a color and displayed on top of the B-mode image... The way in which the frequency shifts are encoded is defined by the color bar located to the left of the image. Positive Doppler shifts, caused by blood moving towards the transducer, are encoded as red and negative shifts are encoded as blue. Color Doppler images are updated several times per second, thus allowing the flowing blood to be easily visualised. However, Color Doppler is very demanding of the electronics and computational power of the Doppler instrument and is therefore relatively expensive. http://www.ob-ultrasound.net/doppler_a.html

colour flow Doppler imaging technique

color flow ultrasound technique

color Doppler ultrasound techniques

color Doppler techniques

color flow Doppler imaging techniques

colour flow Doppler imaging techniques

color flow Doppler imaging technique

color flow ultrasound techniques

color Doppler technique