Physics Bucharest 2017

Heterogeneity Correction

 All dose fractions of a point kernel are scaled by the mean electron density between the point s of energy release and the point r of energy deposition  Approximation for exact kernel for every situation  Convolution/superposition : 100 7 calculations for 30cm x 30cm x 30cm, 3mm grid size …, need approximations !

Range scaling Exact

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