ESTRO course Dose Modelling and Verification 2017

Understanding the purpose... Oncentra

Measured parameters

Derived parameters

Head scatter factors

Flattening filter scatter par

Output factors

Electron contamination par

Depth dose curves

Effective energy spectrum

Attenuation coefficients

Polyenergetic point kernels

deconvolution

Polyenergetic pencil kernels

Lateral dose distribution (“star pattern”)

Energy fluence matrix

Beam source size

X and Y profiles

Beam source size

Small fields (optional)

50

Ahnesjö etal , 2005 MedPhys 32 pp 1722-37