Calibration of Film for Accurate Megavoltage Photon Dosimetry

Journal Article · Thu Jan 15 00:00:00 EST 2015 · Medical Dosimetry

DOI:https://doi.org/10.1016/0958-3947(94)90032-9· OSTI ID:22577834

Hale, J. I. ^[1]; Kerr, A. T.; Shragge, P. C. ^[2]

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1. Queen’s University, Department of Physics, Kingston, Ontario, Canada, K7L 3N6 (Canada)
2. Kingston Regional Cancer Centre, 25 King Street West, Kingston, Ontario, Canada, K7L 5P9 (Canada)

An accurate method of converting film density to dose is presented. For films oriented parallel to the beam’s central axis, calibration curves were produced at several depths using Kodak XV-2 film for cobalt-60, 4 MV, and 18 MV beams. Then the appropriate curve was employed to convert the film density to dose at a specific depth. It is hypothesized that the change in film response with depth is due to changes in the photon spectra at depth in a phantom.

• OSTI ID: 22577834
• Journal Information: Medical Dosimetry, Vol. 19, Issue 1; Other Information: Copyright (c) 1994 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0958-3947
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
62 RADIOLOGY AND NUCLEAR MEDICINE
CALIBRATION
COBALT 60
FILM DOSIMETRY
PHANTOMS
PHOTON BEAMS
PHOTONS
RADIATION DOSES
SPECTRA