STOCKHOLM--(BUSINESS WIRE)--Regulatory News: Three foremost medical centers in the United Kingdom and Germany have ordered and are now planning upgrades to Elekta’s latest generation stereotactic radiosurgery system for the brain, Leksell Gamma Knife® Icon™ , to provide the most advanced brain radiosurgery treatments for their patients. The centers are University Medical Centre Mannheim (UMC, Mannheim, Germany), Bristol Gamma Knife Centre, University Hospitals Bristol NHS Foundation Trust (Bris