Color doppler blood vessels of the neck

CDI – Color Doppler ultrasound is an imaging test that uses sound waves to display blood flow through blood vessels. Standard ultrasound also employs sound waves to create images of internal structures but cannot depict blood flow. Color Doppler, a specific Doppler type, uses a computer to convert sound waves into various colors, illustrating blood flow velocity and direction in real time. This painless, low-risk procedure with minimal preparation provides physicians with vital data on blood circulation through major arteries and veins.

Color Doppler of Neck Vessels

Typically, an ultrasound probe with an acoustic lens connected to a piezoelectric transducer receives sound waves and converts them into a two-dimensional image. Doppler technology tracks changes in sound waves from particles passing the probe, generating a flow pattern when transformed into an image, enhanced by color to highlight blood flow direction—red for flow toward the probe and blue for flow away, with a color scale indicating velocity.

Carotid arteries, the primary neck vessels supplying blood to the brain, neck, and face, branch into internal (brain-supplying) and external (face- and neck-supplying) carotid arteries on each side.

When to Perform Neck Vessel Color Doppler

This test is essential if carotid arteries show narrowing or impairment, given their critical functions requiring optimal condition. Consult a physician for testing if experiencing dizziness, walking instability, unilateral weakness or numbness, vision loss in half the visual field, headaches, stroke, neurological disorders, atherosclerosis, elevated cholesterol or triglycerides, long-term diabetes, or prolonged smoking.