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.
Phantom used for TLD measurements. The inferior edge of the treatment field abutted the superior border of slice 20 of the phantom. TLD capsules were loaded in slices 21 through slice 24 of the phantom, corresponding to distances of 3.75 cm to 11.25 cm from the field edge.
