Merck Manual

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Color Doppler Ultrasonography of Carotid Artery
Color Doppler Ultrasonography of Wrist Tendons
Color Doppler Ultrasonography of Carotid Artery

The orange stripe represents normal, unobstructed blood flow through a large artery in the neck (carotid artery), viewed from the side.

Image provided by Mehmet Kocak, MD.

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Ultrasonography