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Modelling
Once the beam data and machine parameters have been introduced,
the beam model should be completed according vendors instructions
The amount of adjustable parameters depends on the vendor
i.e. Varian: second source (size, mean energy, relative intensity), MLC (DLS,
transmission), spot size.
Therefore modeling is an iterative process when a compromise for the
different clinical situations in which it be used has to be reached.
Evaluate the goodness of the model by
Comparing PDDs and profiles using the softare
beam commissioning application