You are the technologist performing a carotid duplex study.  On the right proximal ICA there is mild plaque present.  In order to obtain a Doppler signal at the site of stenosis, you should;

The main advantage of power Doppler imaging is:

A Hollenhorst plaque is an example of an atherosclerotic plaque.

The Circle of Willis recieves its blood supply from which combination of blood vessels?

The cause of a right hemispheric infarct may be;

The nasal artery becomes the _________ along the lateral border of the nose.

The brain has a reserve of oxygen of approximately;

The vertebral arteries bifurcate from the;

Blood causes pressure on the brain with a subarachnoid hemorrhage.

post stenotic turbulance(1).jpg What type of spectral Doppler wave form does this image display?