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Radiation Protection Dosimetry Advance Access published online on April 27, 2006
Radiation Protection Dosimetry, doi:10.1093/rpd/ncj006
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

SSD 2004 Special Issue Articles

EVALUATION OF THE EDR-2 FILM FOR RELATIVE DOSIMETRY OF HIGH-ENERGY PHOTON AND ELECTRON BEAMS

Munir Ahmad 1 *, Zhe Chen 1, Haijun Song 1, Jun Deng 1, and Ravinder Nath 1

1 Department of Therapeutic Radiology, Yale University School of Medicine, P.O. Box 208040, New Haven, CT 06520, USA

* To whom correspondence should be addressed.
Munir Ahmad, E-mail: munir.ahmad{at}yale.edu


  Abstract

A sensitometric study of Kodak XV and EDR-2 radiographic films (Eastman Kodak Company, Rochester, NY) was performed using photons ranging from 75 kV to 18 MV and electrons ranging from 6 to 20 MeV. To investigate the applicability of the EDR-2 film for clinical radiation dosimetry, percentage depth-doses, profiles and distributions in open and dynamically wedged fields were measured using film and compared with data from a linear diode. Moreover, conventional quality assurance dose parameters were measured, including open-field dose profiles to determine flatness and symmetry of photon and electron beams. Finally, film was employed to validate dose distributions produced by complex computerised treatment planning techniques. Our conclusion is that the EDR-2 film is an effective tool for relative dosimetry of photon and electron beams.


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