 Neuroblastic tumors are childhood neoplasms that possess amino acid decarboxylase AADC activity and Meta-iodobenzylguanidineMIBG, they can theoretically be imaged by 18F-fluorodihydroxyphenylalanine 18F-FDOPA and 123I-Meta-iodobenzylguanidine123I-MIBG PET, they are new and specific diagnostic and follow-up tools for neuroendocrine tumors. In this study, we explored the accuracy and clinical role of 18F-FDOPA and 123I-MIBG PET in neuroblastic tumors. 