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Design of a graticule indicating central axis position for use with portal imaging

Published online by Cambridge University Press:  20 November 2006

K. Cooke ,
L. Askew ,
D. Howson  and
S. Collins
K. Cooke
Affiliation:
Medical Physics Department, Cromwell Hospital, London
L. Askew
Affiliation:
Royal Marsden Hospital, Sutton, UK
D. Howson
Affiliation:
Medical Physics Department, Cromwell Hospital, London
S. Collins
Affiliation:
Medical Physics Department, Cromwell Hospital, London
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Abstract

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This technical note describes a port film graticule that can be used to determine the central axis of a portal image when used with megavoltage film or on-line electronic portal imaging. The construction and quality control of the portal film graticule are highlighted.

Keywords

Graticuleportal imageconstructionquality control
Type
Technical Note
Information
Journal of Radiotherapy in Practice , Volume 3 , Issue 2 , March 2003 , pp. 105 - 108
Copyright
2003 Cambridge University Press