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Radiation Protection Dosimetry Advance Access originally published online on April 27, 2006
Radiation Protection Dosimetry 2006 120(1-4):159-162; doi:10.1093/rpd/ncj006
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Published by Oxford University Press (2006)

Evaluation of the EDR-2 film for relative dosimetry of high-energy photon and electron beams

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

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

* Corresponding author: munir.ahmad{at}yale.edu

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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