IMRT

Adapting the isocentre: Setup correction protocols

An early adaptive RT workflow: Patient-individual reduction of systematic and random setup errors via portal imaging!

planning CT

…

…

Fx 1

(IMRT) plan

Fx 5

Fx 6

Fx N

pretreatment setup correction

new isocentre for the following Fx’s

…

PI

PI

estimation of systematic error

reduction of setup error for the following Fx’s!

Note: The frequency and exact use of PI information depends on the setup protocol used!

ESTRO IMRT course 2015 Adaptive Radiotherapy Brussels October 8th, 2015

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