duplexultraäänikuvaan

Duplex ultraäänikuvaan refers to a medical imaging technique that combines two types of ultrasound: B-mode (brightness mode) imaging and Doppler ultrasound. B-mode provides a two-dimensional anatomical image of the blood vessels, showing their structure and location. Doppler ultrasound, on the other hand, measures the speed and direction of blood flow within those vessels.

When these two modalities are used together in duplex ultrasound, the Doppler information is overlaid onto the B-mode image. This creates a color-coded representation of blood flow, often using red for flow towards the transducer and blue for flow away from it, though other color schemes can be used. The intensity of the color can also indicate the velocity of the blood.

This combined imaging allows clinicians to visualize not only the presence and patency of blood vessels but also to assess the dynamics of blood flow. It is a non-invasive and widely used diagnostic tool for evaluating a variety of conditions, particularly those affecting the cardiovascular system. Examples include assessing for blockages or narrowing (stenosis) in arteries, detecting blood clots (thrombosis) in veins, and evaluating the function of heart valves. Duplex ultrasound is also employed in assessing blood flow to organs like the kidneys and liver. Its ability to provide both anatomical detail and functional information about blood flow makes it invaluable in clinical practice.