Dr. Uday Patel MBCHB, MRCP, FRCR is a consultant radiologist at St George’s Hospital, London, UK. He specialises in the diagnosis and staging of prostate cancer, and has authored ‘Handbook on Transrectal Ultrasound and Biopsy of the Prostate’.Dr. Anna Maria Belli, MB BS is a consultant radiologist at St George’s Hospital, London, UK. She has a special interest in vascular interventional radiology.