491 The prognostic significance of 18F-misonidazole (FMISO) PET-detected tumor hypoxia in patients with advanced head and neck cancer randomly assigned to chemoradiation with and without tirapazamineD. Rischin; R. Hicks; R. Fisher; D. Binns; J. Corry; S. Porceddu; M. Grossi; C. O'Kane; L. Peters · 2004