68Ga-DOTATATE PET Scan in Neuroendocrine Cancer

Inclusion Criteria: * Known diagnosis of neuroendocrine tumor * At least 18 years of age * Able to provide informed consent * Karnofsky score greater than 50 * Females of childbearing potential must have a negative pregnancy test at screening/baseline Exclusion Criteria: * Serum creatinine \>3.0 mg/dL (270 μM/L) * Hepatic enzyme levels more than 5 times upper limit of normal. * Known severe allergy or hypersensitivity to IV radiographic contrast. * Use of any other investigational product or device within 30 days prior to dosing, or known requirement for any other investigational agent prior to completion of all scheduled study assessments. * Patients with a body weight of 400 pounds or more or not able to enter the bore of the PET/CT scanner due to BMI, because of the compromise in image quality with CT, PET/CT and MRI that will result. * Inability to lie still for the entire imaging time (e.g. cough, severe arthritis, etc.). * Inability to complete the needed investigational and standard-of-care imaging examinations due to other reasons (severe claustrophobia, radiation phobia, etc.) * Recognized concurrent active infection * Any additional medical condition, serious intercurrent illness, or other extenuating circumstance that, in the opinion of the Investigator, may significantly interfere with study compliance.