Yes, PSMA PET Scans with PSMA can be used to qualify patients for 177 Lu-PSMA radioligand therapy.  However, the criteria for qualifying for 177 Lu-PSMA radioligand therapy are many, and may differ depending on the institution offering that therapy, or the clinical trial qualifiers for such therapeutic options.  A PSMA PET scan is not a single indicator or qualifier for such therapeutic options.  However, for those that do otherwise qualify, a positive diagnostic PSMA PET Scan is typically required in order to demonstrate that the patient’s recurrent prostate cancer is “PSMA Avid”.  Once a positive PSMA PET scan is obtained and demonstrates the extent of disease, this serves as an additional criterion necessary prior to 177 Lu-PSMA radioligand therapy.