ESTRO course Dose Modelling and Verification 2017

Limitations of margin recipes

Idealised patient geometry • Spherical target

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• No change in body contours • No account for organs at risk • Motion only includes translation • Normal distribution of errors

Idealised dose delivery • Perfect conformity • Not affected by changes in geometry • Calculation only considers minimum dose

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• Infinite number of fractions • Normal distribution of errors

03/01/13