613 / 1311
Take home messages
• FDG-PET is value-added in the GTV-T determination.
• Contrast CT is sufficient to define the GTV-N.
• The CTV-T margins are defined by an institutional or study protocol.
• The CTV-N margins are 10 mm for IMRT & 13-15 mm for 3D-CRT.
• The consensus 2015 guidelines specify OAR delineation.
• Per-treatment target & OAR volume changes are individual.
• Adaptive radiotherapy should become a standard, though a
comprehensive treatment protocol should be thought out first.