In total, 59 subjects will be recruited in the study. The study will recruit both healthy volunteers as well as patients with confirmed or suspicious NET disease by histology or conventional anatomical and functional imaging modalities including but not limited to magnetic resonance imaging (MRI), and/or computed tomography (CT), and/or, F-18 FDG fluorodeoxyglucose PET (positron emission tomography)/CT and /or F-18 NaF sodium fluoride bone PET/CT and/or bone scintigraphy, and/or Octreoscan.