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IMRT Treatment Planning
Sharpe | ESTRO | June 2012
Clinical Objectives
Targets, OARs,
Dose-volume
implicit objectives
Evaluate
Treatment
Plan
Treatment Delivery
(computer control)
(MLC)
PATIENT MODEL
delineated organs, targets
organ movement
geometric uncertainties -
PTV
Medical Imaging
(CT, MR, PET)
Optimization Engine
(select parameters
that minimize
the enumerated
objective function)
Dose
Computation
MACHINE MODEL
Physical Geometry
constraints & limits
Beam number, angles, energy,
MLC geometry, leaf speed
Adjustable Parameters
MLC shape, number of apertures,
number of MU
’
s, dose rate
Objective
Function