 Prostate specific membrane antigen PSMA is a unique membrane bound glycoprotein, which is overexpressed manifold on prostate cancer cells and is well-characterized as an imaging biomarker of prostate cancer. Positron emission tomography computer tomography PETCT is a nuclear medicine procedure based on the measurement of positron emission from radiolabeled tracer molecules. 18F-DCFPyL is a tracer for prostate cancer PET imaging which binds to PSMA. The strength of functional imaging methods is in distinguishing tissues according to metabolism rather than structure. Studies have shown that PETCT imaging with 18F-DCFPyL can detect prostate cancer lesions with excellent contrast and a high detection rate even when the level of prostate specific antigen is low. 