ArticleJournal of contemporary brachytherapy2026
Iridium-192 high-dose-rate calibration discrepancies: A growing concern?
Article in Journal of contemporary brachytherapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Purpose: An increasing discrepancy between the measured reference air kerma rate (RAKR) of high-dose-rate (HDR) iridium-192 ( Material and methods: A survey was distributed to physicists at brachytherapy clinics across Australia, New Zealand, the United Kingdom (UK), France, and Ireland, gathering details on HDR Results and Conclusions: One thousand one hundred fifty observations from 32 clinics were analyzed, with RAKR measurement histories ranging from 2 to 20 years (mean, 9 years). The manufacturer of all sources included in this analysis was Curium. A trend of increasing local measurement value compared with the manufacturer certificate value was observed for all series, with 20 or more observations. Sites with well chambers calibrated at NPL or UWADCL showed an increase in discrepancy between measured and source certificate RAKR, approximately 0.2% per year on average, from 2015 to present. There is an increasing discrepancy between locally measured
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