Physics Bucharest 2017

IGRT – tumor set-up correction strategies

• Introduction • Random and systematic set-up errors • Set-up correction protocols:

- general aspects - on-line protocol - off-line protocols

• a too simple off-line protocol • No Action Level 1 (NAL) protocol • eNAL (extended NAL) protocol

1 de Boer, Heijmen, IJROBP, 2001