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IMRT
plan
TPS
Planar
fluence
prediction
High resolution 2D array
measurements
MapCheck (Sun Nuclear)
sampling 0.2 mm
User:
Configuration data
(measurements);
tunning of conf.
parameters
Vendor:
Beam
modeling-
dose
calculation
algorithms
-
cal
i n
al
s
User:
Configuration
data
(measure ents);
tunning of conf.
para eters
Performance testing – ex. Feed back
configuration parameters
Utretch 2016
Cost function= 1-Gamma evaluation pass rate
Configuration parameters
Jaw and MLC transmission
Radiation source size
Extrafocal radiation contribution
MLC rounded lef-end transmission
2%-1mm Th 10% Tolerance 85% points