Figure 2.
Treatment plan for proton beam therapy including isodose distribution; the orange structure is the GTV, the red structure the CTV and the blue structure the PTV.
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.