Head-to-Head Comparison between Peptide-Based Radiopharmaceutical for PET and SPECT in the Evaluation of Neuroendocrine Tumors: A Systematic Review.

We compared head-to-head the most used radiolabeled peptides for single photon computed emission tomography (SPECT) and positron emission tomography (PET) imaging of neuroendocrine tumors (NETs). A comprehensive literature search was performed in PubMed, Web of Science, and Scopus databases. The following words, coupled two by two, were used: Ga-DOTATOC; Ga-DOTATATE; Ga-DOTANOC; Tc-EDDA/HYNIC-TOC; Cu-DOTATATE; and In-DTPA-octreotide.