Radiobiology 2016

Image-Guided Radiation Therapy in HNSCC

Impact of imaging modality on CTV/PTV delineation

Larynx/hypopharynx (n=9)

Oropharynx (n=10)

200

CT-scan

CT-scan

250

FDG-PET

FDG-PET

150

200

ANOVA: p<0.05

ANOVA: p<0.01

150

100

100

50

50

Average (± sem) volume (cc)

Average (± sem) volume (cc)

0

0

GTV

CTV

PTV

GTV

CTV

PTV

ESTRO

Geets et al , 2003