The EnSite System is the most advanced computer-based technology for mapping any arrhythmia and navigating electrophysiology catheters in real time. An indispensable tool for facilitating electrophysiology procedures, the system creates three-dimensional (3-D) graphical displays of cardiac structures and arrhythmias, and enables catheter navigation without the use of fluoroscopy. The system's open platform allows physicians to use their preferred therapy approach with the diagnostic and ablation catheters of their choice.