Dose Course 2018_Flipping book

Dose per MU formalisms: factor-based dose calculations

(

)

s cD ; , , d

SSD d

How do factor-based formalisms deal with:

M

• non-square collimator settings • fields shaped with blocks or MLCs • modulation with hard wedges • modulation with soft (dynamic/virtual) wedges • other modulations (IMRT fields) • Inhomogeneities • points off axis

SSD

c

d

s

d

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