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Gamma analysis clinically relevant?
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Studies have shown that clinically relevant parameters do not correlate well
with gamma pass rates (Nelms et al. MedPhys 2011, Carver et al.
RadiatOncol 2011)
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Dose deviation tolerance usually at a few percent
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Tumour control probability depends strongly on the dose deviation
•
Comparison of isodoses is important for critical organs at risk
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Not sensitive to small systematic differences
05/04/2016