Value of early evaluation of treatment response using 18 F-FDG PET/CT parameters and the Epstein-Barr virus DNA load for prediction of outcome in patients with primary nasopharyngeal carcinoma

Purpose To determine the value of early evaluation of response to concurrent chemoradiotherapy (CCRT) using 18F-FDG PET-derived parameters and the Epstein-Barr virus (EBV) DNA titre in outcome prediction in patients with primary nasopharyngeal carcinoma (NPC).