Pilot Study of Somatostatin Receptor Imaging in Nasopharyngeal Cancer

Hypothesis: To estimate the proportion of locally advanced, recurrent or metastatic nasopharyngeal cancer patients which show high somatostatin receptor density (SUVmax \>10) on Ga-68 DOTATATE imaging. Galium-68 DOTATATE: PET imaging will be performed with a PET/CT scanner. Galium-68 DOTATATE will be injected intravenously. Scanning will be performed approximately 60 minutes after the injection. The standardized uptake value (SUV) will be used in the interpretation of the Ga-68 DOTATATE scans. The values gathered will be used as an estimate of the somatostatin receptor density. A patient will be considered to have an overall high somatostatin receptor density if the average SUVmax of all the representative lesions is more than 10.