Dose Course 2018_Flipping book
Uncertainties
• Published studies on EBT, red channel, uncertainty between 0.9% and 2% depending on the procedure.
• None of these uncertainty calculations take into account the uncertainty in the dose measured by the ionisation chamber. (Reference conditions: relative standard uncertainty 1.5% for high energy X-ray beams (TRS398)).
• Uncertainty is reduced using 3 channel methods. The uncertainty depends on the model used for channel combination
(Mendez et al. MP 41(1) 2014).
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