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Summary
DescriptionTeletherapy Capsule.jpg
English: A diagram of a typical teletherapy radiation capsule comprised of the following: A.) an international standard source holder (usually lead), B.) a retaining ring, and C.) a teletherapy "source" composed of D.) two nested stainless steel canisters welded to two E.) stainless steel lids surrounding an F.) internal shield (usually uranium metal or a tungsten alloy) that protects a G.) cylinder of radioactive source material, often but not always cobalt-60. The diameter of the "source" is 30mm.
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