Overview

The purpose of this research study is to test new ways to improve the usefulness of the world's first total-body positron emission tomography (PET)/computed tomography (CT) scanner (EXPLORER) by collecting data from PET scans using one of three different imaging agents: 18F-PSMA; 18F-FES; or, 68Ga DOTATATE. These imaging agents are approved by the FDA to be used for patients diagnosed with prostate cancer (18F-PSMA), neuroendocrine tumor (68Ga DOTATATE), or breast cancer (18F-FES).

Eligibility

18F-PSMA (n=3) and 68Ga-PSMA (n=3)

Inclusion criteria:

• Persons \>18 yo with suspected prostate cancer metastasis
• Prior imaging study (CT, and/or MRI and/or Bone scan and/or Fluciclovine scan) suspicious for metastatic disease, obtained within 4 months from the research scan date.

  68Ga DOTATATE (n=3) or 64Cu-DOTATATE (n=3)

Inclusion Criteria:

• Persons \> 18 yo suspicious for or diagnosed with somatostatin receptor positive neuroendocrine tumors (NETs)
• Prior DOTATATE PET/CT scan suspicious for tumor obtained not earlier than 4 months from the research scan date.

Exclusion Criteria:

• Recent administration of long-acting somatostatin analogs

Exclusion Criteria for all participants:

• Adults unable to consent
• Pregnant/lactating persons
• Prisoners
• Unable to lie supine for up to 90 minutes at different timepoints in the PET scanner
• Uncontrolled claustrophobia
• Any significant medical condition that in the opinion of the investigator would prevent the participant from participating and/or adhering to study related procedures or interfere with participant safety