Dose Course 2018_Flipping book
Physical processes in MV photon beams
Photon radiant energy exiting the target
Fluence engine
Treatment head & air
Interactions, predominantly in the flattening filter
Contaminant charged particles
Electron con- tamination dose
Contaminant charged particle energy deposition
Primary photon energy
Head scatter photon energy
Patient
Primary charged particle kinetic energy
Scatter photon energy
Head scatter charged particle kinetic energy
Scatter photon
Dose engine
Primary dose
Primary energy deposited
Scatter charged particle kinetic energy
Scatter charged particle kinetic energy
Bremsstrahlung and annihilation photon energy
Bremsstrahlung and annihilation photon energy
Head scatter energy deposited
Scatter energy deposited
Scatter energy deposited
Bremstrahlung and annihilation charged particle kinetic energy
Bremstrahlung and annihilation charged particle kinetic energy
Bremsstrahlung plus annihilation energy deposited
Bremsstrahlung plus annihilation energy deposited
Direct beam phantom scatter dose
Head scatter dose
3
Ahnesjö and Aspradakis, PMB 44 (1999), R99-155
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