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.
A,B. Venograms performed after catheterization of IPS. A, AP venogram of right IPS (curved arrow) demonstrating normal opacification of the right sinus as well as cross-filling into the left IPS. The anterior pontomesencephalic vein (small arrows) is seen draining inferiorly into the vertebral plexus. B, Lateral venogram of right IPS demonstrating the anterior pontomesencephalic vein (small arrows) and reflux into the cranial aspect of the anterior mesencephalic vein (curved arrow).
