GCG and neoplasm: New developments in molecular NET imaging range from the combination of F-18 FDG and Ga-68 DOTATOC to characterize different tumors and their aggressiveness to promising new tracers such as Glucagon-Like-Peptide-1 (GLP-1) receptor or somatostatin receptor antagonists tracers.26,27 Depending on the clinical problem not all examinations need to have the best tumor detection or the best tumor to background ratio.