4.2.2 Value of F-FDG PET / CT in prognosis after chemoradiation 4.2.2.1 Predictive value of F-FDG PET / CT for clinical complete response Tumor's parameters with predictive value of complete response include pre-treatment SUVmean (AUC = 0.736, p = 0.011) and post - treatment SUVmean (AUC = 0.922, p = 0.000).