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 clinical dose distributions delivered at our institute using PBS proton therapy, showing the large volumes of normal tissue spared by the stopping characteristcis of protons. (a) A large meningioma treated using 3-fields. (b) A sacral chordoma treated with two posterior-oblique fields. PBS, pencil beam scanning.
