Fig. 1. Comparison of contrast flow with static image and digital subtraction angiography (DSA). (A) Contrast flow using static images. (B) Contrast flow using DSA.
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.