Leksell Gamma Knife® 4 has been developed to meet the exacting demands of hospitals and clinics that have a small patient caseload and an strong commitment to delivering the highest levels of treatment efficacy. Leksell Gamma Knife® 4 can be easily upgraded to Leksell Gamma Knife® 4C should the need arise. The system offers all the benefits of stereotactic radiosurgery at a very reasonable price. • True Gamma Knife® surgery with Leksell stereotactic coordinate frame fixation. • Powerful and intuitive treatment planning with Leksell GammaPlan®. • Best dose conformity in daily clinical practice compared to all other non Gamma Knife® surgery systems. • MRI, CT and angio­based treatment planning.