Head-to-head Comparison of [18F]AlF-PSMA-N5 With [18F]F-DCFPyL PET/CT in PCa Diagnosis, Recurrence, and Metastasis

This study is comparing two types of PSMA PET scans — a way to detect prostate cancer by imaging specific proteins on cancer cells — to see which is more accurate for diagnosing prostate cancer, detecting recurrence after treatment, and finding spread to other areas. **You may be eligible if...** - You are between 18 and 90 years old - You have been diagnosed or are suspected of having prostate cancer (by PSA blood test or imaging) - You have complete MRI images and clinical data available - You are willing to have both scan types done within two weeks of each other - You agree to have a biopsy or surgery for tissue confirmation **You may NOT be eligible if...** - You are unable to cooperate with the scanning process - You have another active cancer - You have a known allergy to alcohol (used in the scan preparation) - You have significant liver or kidney problems Talk to your doctor to see if this trial is right for you.