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The British Journal of Radiology, Vol 73, Issue 867 314-316, Copyright © 2000 by British Institute of Radiology

ARTICLES

A therapy beam training aid

AW Seaby and C Cravan
Department of Medical Physics and Clinical Engineering, Singleton Hospital, Swansea NHS Trust, UK.

Beams of X-rays and electrons used in external beam radiotherapy are characterized by differences in penetration, build-up, divergence, scatter etc. This short communication describes a very simple phosphor-loaded box that can be used to demonstrate directly to students the different properties of beams and the effect of field modifiers such as wedge filters, lead shields etc.




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