Normal extracranial carotid arteries are easily accessible to ultrasound. The arterial contour is smooth with a thin intimal echo. Laminar flow profile is seen in all vessels. Minor turbulence can be encountered in the carotid bulb in the region of flow separation. The CCA is a mix-resistance vessel, ECA contains medium-to-high resistance signal, and the ICA demonstrates low resistance.
The ASUM Online Clinical Handbook is presented as an educational aid for
experienced practitioners. It is the responsibility of the individual
practitioner to determine how the information should be applied to