Nuclear Medicine has greatly contributed to the diagnosis and treatment of neuroendocrine neoplasms. This title focuses on the diagnosis and treatment of neuroendocrine tumors, and theranostics. It includes topics such as SPECT and other PET tracers, F-DOPA, Ga-DOTA-peptides, Yttrium- and Lutetium-based therapy, and the role of FDG PET.