18F-mFBG LAFOV PET/CT Compared to 123I-mIBG Scintigraphy SPECT/CT for Evaluation of Children With Neuroblastoma

Inclusion Criteria: 1. An established diagnosis of neuroblastoma based on unequivocal histopathology from tissue obtained at any time prior to enrolment in the trial; OR b) A presumed diagnosis of neuroblastoma based on signs, symptoms, physical examination, imaging findings, and laboratory and genetic test results, including individuals in whom therapy has already been empirically initiated. 2. The subject has undergone or is scheduled to undergo evaluation of neuroblastoma disease status, including 123I-mIBG +/- 7 days to the date of 18F-mFBG imaging, with no therapy between such evaluation. 3. Ability of subject or subject's legal guardian to understand and sign a written informed consent document. \- Exclusion Criteria: 1\. Pregnancy \-