Calibration of radiotherapy ionization chambers using Co-60 is outdated and should be replaced by direct calibration in linear accelerator beams

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DOIResolve DOI: http://doi.org/10.1118/1.4922710
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TypeArticle
Journal titleMedical Physics
ISSN0094-2405
Volume42
Issue9
Pages50035006
AbstractMost medical linear accelerators worldwide are calibrated using ionization chambers that are themselves calibrated by a standards laboratory, or secondary standards laboratory, in a Co-60 beam. Because these chambers are actually used to calibrate high-energy x-ray beams, it has been suggested that calibration against Co-60 is outdated and should be replaced by calibration in linear accelerator beams. This is the claim debated in this month’s Point/Counterpoint.
Publication date
LanguageEnglish
AffiliationMeasurement Science and Standards; National Research Council Canada
Peer reviewedYes
NPARC number23000718
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Record identifier09ffb6a4-14f2-43ba-b476-736579f222cb
Record created2016-09-01
Record modified2016-09-01
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