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.