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Radiology, Vol 127, 546-547, Copyright © 1978 by Radiological Society of North America

ARTICLES

Spherical lead shields for megavoltage teletherapy

RA Morrison

A new method of manufacturing individualized, focused lead shields for megavoltage teletherapy is described. Computerized film dosimetry demonstrated that in contrast to nonfocused shields, the new focused shields exhibit good maintenance of penumbra width as the distance between the edge of the beam and the central axis is increased.




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RADIOLOGY RADIOGRAPHICS RSNA JOURNALS ONLINE
Copyright © 1978 by the Radiological Society of North America.