IGRT 2016 Madrid

How flexible is the neck ? Results: OAR/lymphnode

Conclusions

Count of C3-C5 found within margin after online registration in 249 CBCT scans

IMRT/IGRT for Head and Neck results in: – Better target coverage – Lower toxicity – Higher dependence on target volume delineation – Patient is more flexible than one margin – 2D detects less than 3D

100.0 110.0

0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0

C3-C5 - Multi Match

Count (%)

C3-C5 - Overall ROI

C3-C5 - Larynx

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Margin(cm)

Special thanks to:

♥ Anja Betgen ♥ Jose Belderbos

♥ Marcel van Herk ♥ Jan-Jakob Sonke ♥ Corine van Vliet ♥ ♥ Peter Peter Remeijer Remeijer ♥ Danny Minkema ♥ Rianne de Jong ♥ Suzanne van Beek ♥ Rajko Topolnjak ♥ Jasper Nijkamp ♥ Eugene Damen ♥ Maddelena Rossi

♥ Jochem Wolthaus ♥ Monique Smitmans ns ♥ Floris Pos ♥ Josien de Bois

♥ Lambert Zijp ♥ Joop Duppen

♥ Simon van Kranen ♥ Angelo Mencarelli ♥ Joos Lebesque ♥ And many Others………