Atheroma plaque, Doppler ultrasound

Atheroma plaque, Doppler ultrasound

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Credit: ZEPHYR/SCIENCE PHOTO LIBRARY

Caption: Atheroma plaque. Power Doppler ultrasound scan of reduced blood flow (orange) around an atheroma plaque (black) on the wall of the internal carotid artery of a neck. An atheroma plaque is a deposit of fatty material on an artery wall. It can be caused by a high-cholesterol diet, as well as smoking, and increases the risk of a thrombus (clot) forming. Treatment is with drugs or a graft to bypass the affected area. Doppler ultrasound scanning detects moving fluids, such as blood, by the frequency change they cause when reflecting high-frequency sound waves. Power Doppler scans use colour to show the moving fluid, but do not show the direction of the flow.

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Keywords: arterial, atheroma plaque, blood vessel, carotid artery, circulation, circulatory, colour, condition, diagnosis, diagnostic, disease, disorder, doppler, flow, healthcare, impeded, internal, medical, medicine, narrowed, narrowing, neck, patient, power, reduced, scan, scanning, sonograph, sonography, stenosis, system, ultrasound, vascular

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