68Ga DOTA-TATE PET/CT in Somatostatin Receptor Positive Tumors

Inclusion Criteria: * Greater than 18 years-old at the time of radiotracer administration * Provides written informed consent * Known diagnosis of NET or suspected SSTR positive tumors by 111In-Octreotide scan, 18FDG-PET, or MRI of the abdomen when clinically indicated * Karnofsky score greater than 50 or ECOG Performance Status 0-2 * Women of childbearing age must have a negative pregnancy test at screening/baseline * Able to remain still for duration of each imaging procedure (about one hour) Exclusion Criteria: * Less than 18 years-old at the time of radiotracer administration * Pregnant or nursing * Serum creatinine \>3.0 mg/dL * Hepatic enzyme levels more than 5 times upper limit of normal. * 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. * Inability to lie still for the entire imaging time * Inability to complete the needed investigational and standard-of-care imaging examinations due to other reasons (severe claustrophobia, radiation phobia, etc.) * Any additional medical condition, serious intercurrent illness, or other extenuating circumstance that, in the opinion of the Investigator, may significantly interfere with study compliance.