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.
Early filling of the vein of Galen. Two projections from a 3D DSA (left) and MIPS through a 4D DSA(right) derived by using two of the 220 projections used to form the 3D volume. Dynamic filling of the vascular structures is clearly seen on the rotating 4D DSA volume as indicated by the arrows
