Abstract
In external-beam therapy (or teletherapy), a radiation beam coming from a source located at a distance from the patient is directed toward the patient. The source of the radiation emitted is enclosed in a heavily shielded source head. The prefix ”tele“ (meaning far or distant) in teletherapy (in contrast to the prefix brachy, meaning near or short, in brachytherapy) signifies the use of a large source-to-patient distance. In most practical cases, this distance is in the range of 30 to 150 cm.
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© 2004 Springer-Verlag Berlin Heidelberg
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Jayaraman, S., Lanzl, L.H. (2004). Equipment for Radioisotope Teletherapy. In: Clinical Radiotherapy Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-18549-6_9
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DOI: https://doi.org/10.1007/978-3-642-18549-6_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-62155-0
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