Carotid ultrasound can image portions of the arteries in the neck and document visible plaque in the segments examined. Plaque is a focal structural finding; CIMT is a measurement of arterial-wall thickness. The concepts are related, but they are not identical.
Relatively dark on ultrasound. The term is descriptive and is not a direct chemical analysis.
Contains a combination of darker and brighter components or variable echogenicity.
Appears brighter and may produce acoustic shadowing because calcium strongly reflects ultrasound.
Reports may describe the arterial segment, measurement, uniformity, or visible surface when image quality permits.
Plaque presence and the degree of carotid stenosis are different questions. Visible plaque can be present without severe narrowing. When a physician needs to evaluate suspected stenosis, neurologic symptoms, a bruit, or another diagnostic indication, a diagnostic carotid duplex is the appropriate pathway.
Ultrasound appearance alone should not be reduced to a simple safe-versus-dangerous label or used to determine treatment without clinical context.
Yes. Atherosclerosis can be present without symptoms, although whether imaging is appropriate depends on the clinical context.
Not necessarily. Plaque presence does not by itself establish the degree of stenosis.
Comparison may be possible when acquisition and measurement methods are sufficiently consistent, but interpretation should account for variability and clinical context.
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