ATP Barcelona 2017

Conclusions • IMRT superior to 3DCRT for locally advanced NSCLC – lower dose to all risk organs except low dose to lungs

• Interplay effects not really critical in IMRT – gated delivery not crucial for IMRT

– but start off with ‘simple’ plans with large segment shapes – additional respiration margin of about ¼ amplitude (if GTV is delineated at mid-vent CT)

• Sound IGRT protocols are crucial