Monte Carlo based models
Transport
o
MC-models transports particles
generally
in the medium and
interaction is determined from the actual medium
o
EGSnrc, GEANT, Penelope…
o
Patient model can be “fooled” to be water by varying density by
changing look-up tables!
Deposit
o
Energy deposit in each voxel is based on the medium
o
This can be converted to dose in water
We have and/or and/or
o
In commercial system these choices are probably not available
April 2017
23
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,
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