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2.

Heterogeneity correction validation

o

Important to understand the implementation of the

heterogeneity corrections and also their limitations.

o

Important to know what dose is being reported:

o

Dose to water or dose to media

o

Any heterogeneous phantom available can be used. A reasonable

phantom is a slab phantom with water equivalent+low density

material+water equivalent.

o

Use small fields (5x5 cm2) because discrepancies are maximized.