Dose Course 2018_Flipping book

AAPM TG-218

 Focuses on standardising how measurements are performed and analysed  “True Composite” measurements preferable to “Perpendicular Field-by- Field” measurements

Global normalisation

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 Use dose threshold (10% approx.)

 Gamma criteria: 3%/2mm with tolerance of ≥95% and action ≥90%

 Examine gamma values >1.5 and review where differences are located w.r.t. to organs/targets for clinical relevance