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.
Beam contour plots, measured with and without the custom-made scattering filter, at an SSD of 380 cm, using the 6 MeV high dose electron- mode. The isodose contours represent a percentage dose relative to the dose on the central axis. The shaded body approximates the silhouette of an 80 kg man of 180 cm in height. Left: the clinically unsuitable open beam; right: the clinically acceptable filtered beam.9
