Teletherapy 3
Teletherapy 3 :
Treatment in which the source of the therapeutic radiation is at a distance from the body. Because teletherapy is often used to treat malignant tumors deep within the body by bombarding them with a high-energy beam of gamma rays (from a radioisotope such as cobalt-60) projected from outside the body, it is often called external beam radiotherapy. For related information, see the Backgrounder on Medical Use of Radioactive Materials
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