Doppler ultrasound is a non-invasive imaging technique that uses sound waves to visualize blood flow through arteries. It can diagnose diseases such as blood clots, aneurysms, and heart valve problems. There are three forms of Doppler ultrasound: color, power, and spectral. A sonographer uses a portable transducer to capture images of the organ under examination. No preparation is needed, and it requires no post-procedure care.
Doppler ultrasound, also known as Doppler ultrasound, is an imaging technique that provides visualization of blood flow through arteries. It is a non-invasive, painless procedure that uses sound waves to diagnose disease. The procedure can be done as an option to x-ray imaging techniques, such as venography and arteriography, which involve injecting dye into the blood vessel to make it clearly visible on x-rays. Doppler ultrasound can help pinpoint blood clots, aneurysms and heart valve problems, among others. It can be performed in the major veins and arteries of the body such as the legs, neck and arms.
There are basically three forms of Doppler ultrasound: color, power, and spectral. With the help of a computer, color Doppler translates Doppler metrics into a range of colors to provide an image of the direction and flow rate of blood through an artery. Power Doppler, can provide more information about blood flow, especially in situations where there is nominal blood flow; it is usually employed in the assessment of blood flow through arteries located in solid organs. Spectral Doppler displays blood flow details in a graph rather than an image.
Doppler ultrasound uses two complementary principles: ultrasound and Doppler. Ultrasound is based on the principle that high frequency sound will be bounced from its target to where it came from. The Doppler principle, on the other hand, maintains that the pitch of a sound increases as the sound source approaches the person listening to it; conversely, the pitch of the sound decreases as the sound source moves away from the listener. The application of the two principles leads to the formation of an image of the organ under examination by means of Doppler ultrasound.
A technician, known as a sonographer, performs the Doppler ultrasound. He uses a portable transducer, also known as a probe. It presses the transducer against the person’s skin in the area where the organ to be checked is located. The gel is often applied to the area of skin to be probed to facilitate movement of the transducer. The image of the organ is captured from different angles on x-ray film, disc or paper for use by the doctor who requested Doppler ultrasound.
No preparation is needed before the Doppler ultrasound is performed. It can be done as an outpatient procedure and requires no post-procedure care.
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