The Gamma Knife Program at Doctors Hospital treats brain tumors and other neurological conditions. The Gamma Knife is not actually a knife. It is a device that uses gamma rays to destroy brain tumors (both cancerous and non-cancerous) and treats other conditions including malformations of blood vessels and trigeminal neuralgia. This is done without an incision or physical entry into the brain. Because there is no cutting involved, there is no hospital stay and the entire procedure is done in just hours.