Leksell Gamma Knife® Perfexion™ Leksell Gamma Knife® Perfexion™ represents the future of SRS. This innovative system radically broadens both the techniques and the scope of treatments. Leksell Gamma Knife Perfexion offers faster, more flexible surgical procedures, thereby enabling substantially more patients to be treated with less effort than ever before. | Leksell Gamma Knife® 4C Leksell Gamma Knife® 4C is the fully expanded and enhanced version of Leksell Gamma Knife 4. It is built for the needs of hospitals and clinics with a strong patient caseload and offers all the benefits of Gamma Knife® surgery. Built-in robotic Automatic Positioning System™ receives coordinates directly from the treatment plan, providing improved workflow, performance and speed. | Leksell Gamma Knife® 4 Leksell Gamma Knife® 4 has been developed to meet the exacting demands of hospitals and clinics that have a small patient caseload and a strong commitment to delivering the highest levels of treatment efficacy. The system offers all the benefits of Gamma Knife surgery at a very reasonable price. |