Radiochromic film as a radiotherapy surface-dose detector

Radiochromic film as a radiotherapy surface-dose detector

Radiochromic film is shown to be a useful surface-dose detector for radiotherapy x-ray beams. Central-axis percentage surface-dose results as measured by Gafchromic film for a 6 MVp x-ray beam produced by a Varian 2100C Linac at 100 cm SSD are 16%, 25%, 35%, 41% for 10, 20, 30 and 40 cm square field...

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Bibliographic Details
Published in:Physics in medicine & biology Vol. 41; no. 6; p. 1073
Main Authors: Butson, M J, Mathur, J N, Metcalfe, P E
Format: Journal Article
Language:English
Published: England 01-06-1996
Subjects:
Biophysical Phenomena
Biophysics
Humans
Phantoms, Imaging
Radiometry - instrumentation
Radiotherapy Dosage
Radiotherapy, High-Energy
Skin - radiation effects
X-Ray Film
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Description
Summary:Radiochromic film is shown to be a useful surface-dose detector for radiotherapy x-ray beams. Central-axis percentage surface-dose results as measured by Gafchromic film for a 6 MVp x-ray beam produced by a Varian 2100C Linac at 100 cm SSD are 16%, 25%, 35%, 41% for 10, 20, 30 and 40 cm square field sizes, respectively. Using a simple, uniform light source and a CCD camera connected to an image analysis system, quantitative 3D surface doses are accurately attainable in real time as either numerical data, a black-and-white image or a colour-enhanced image.
ISSN:0031-9155
DOI:10.1088/0031-9155/41/6/011