Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Axial CT scan, obtained at the level of the great vessels, shows nonopacification of the left common carotid artery (right arrow), indicative of occlusion. The right brachiocephalic artery is not well seen because of streak artifact, but no definite enhancement is seen in the expected location of the vessel (left arrow).
