Carotid Artery Stenosis: Ultrasound Diagnosis. How To Do It

The echocolor Doppler of the carotid plaque is performed to have information about its degree of stenosis and its composition/surface.

The degree of stenosis is the most correlated clinical event: the greater is the stenosis, the greater is the risk of TIA/stroke and the benefit of surgery. Therefore, particular care should be used to evaluate the percentage of stenosis.

The main parameters that should be used in diagnosing and grading internal carotid artery stenosis are the peak systolic velocity and the presence of plaque on grayscale and/or color Doppler/duplex US images.

Although CDU cannot precisely define the percentage of stenosis diameter, a range of stenosis diameters may be estimated.

In this lesson the methodology of the echocolor Doppler study of the degree of carotid stenosis is presented.


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