ABSTRACT
Ultrasound is a very important method of interrogating the neck arteries as potential donor
sources of emboli. Modern ultrasound has greatly improved evaluation of arterial disease
in the neck and head. The important advantage of ultrasound lies in the ability to image
and study the arterial wall. Other imaging techniques-dye-contrast angiography and
computed tomography and magnetic resonance angiography-provide images of the
lumen of arteries but do not give information about the arterial wall or the nature of
plaques that protrude from the arterial wall.
