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.
Graphs show (a) absolute difference and (b) ratio between infarct volume on CT angiography source images (CTA-SI) and that on DW images (DWI) versus mean time to imaging of the anterior circulation (AC) territory. At imaging times of less than 38 seconds, volume is overestimated at DW imaging in the majority of cases. Dashed line = line of equality.
