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.
Example of observed colour Doppler ultrasound signals (DUS) superimposed on B-mode images. The two images shown were taken at different times during an RFA ablation experiment using the needle probe. The letter A indicates the location of the RFA probe while letters B and C denote thermocouple locations (2mm apart as measured with the scanner).
