Figure 4.
Dose painting for multiple off-center foci (left column), line (middle column) and ring distributions (right column) was achieved using multiple rotations with varying collimation width.
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.