Illuccix will be used per the prescribing instructions for PET-CT imaging on the United Imaging scanner uEXPLORER to establish a standard scanning protocol.

Inclusion Criteria:

1. Provision of signed and dated informed consent form

2. Male ≥ 18 years of age

3. Patients meeting clinical need for Illuccix PET scan:

   1. Patients with suspected metastasis who are candidates for initial definitive therapy
   2. Patients with suspected recurrence based on elevated serum prostate-specific antigen (PSA) level

4. Patient is physically able to lay flat for the PET-CT procedure

Exclusion Criteria:

1. Assessment by the Investigator as unable or unwilling to comply with the requirements of the protocol.