Carotid Duplex Scan

The carotid arteries are located in the neck. A Carotid Duplex Scan is an ultrasound test that shows if plaque is blocking blood flow through the carotid arteries. If there is a large amount of plaque, it can cause stroke.

In this examination, gel is applied to the skin on the neck. A transducer (a handheld device) is then used to scan the arteries. The transducer sends high-frequency sound waves into the neck, then the reflection of sound waves creates images of the blood vessels, and blood flow can also be measured. This information is evaluated to determine the risk of stroke and its prevention.

A Carotid Duplex Scan showing Plaque

A Carotid Duplex Scan showing no plaque

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