SSTR2 Imaging With [68Ga]Ga-DOTA-TOC PET/CT in NPC

"Patients will undergo \[68Ga\]Ga-DOTA-TOC PET imaging before and 3 weeks after start of standard of care treatment with induction chemotherapy or CRT, unless the baseline scan shows no tracer uptake in the tumor, in that case the scan will not be repeated.~Patients will receive 120 MBq \[68Ga\]Ga-DOTA-TOC intravenously and will be scanned up to 20 minutes, 60 minutes after tracer injection, after acquisition of a low dose CT for attenuation correction.~The investigators will use archival tissue of the diagnostic biopsy for SSTR2 staining. If there is not sufficient tumor tissue available, a new biopsy will be performed after the baseline PET scan.~Blood samples will be drawn before the start, during and after finishing therapy at 3 or 4 different time points, depending on the treatment schedule."