IMRT

The next step: more than one re-optimization, dose accumulation, probabilistic planning planning CT IMRT plan … Fx 5 Fx 1 Fx 6

Birkner et al. 2003 (Med. Phys. 30(10))

…

Fx N

new plan

1 cm margin around CTV

probabilistic IMRT plan

…

optimizes the expected dose-per-voxel one feedback loop

CT

CT

deformable registration, dose warping, dose accumulation

model motion of each voxel, this enables calculation of average ‘expected’ dose-per-voxel

versus

continuous adaptive feedback

planning CT

…

…

Fx 7

Fx 1

IMRT plan

Fx 5

Fx 6

Fx N

CT

CT

1 cm margin around CTV

prob. IMRT plan

prob. IMRT plan

prob. IMRT plan

…

…

CT

CT

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

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