Gamma Knife Surgery - Overview
Gamma knife surgery (GKS), a minimally invasive neurosurgical procedure, is usually used to treat benign and some malignant brain tumours, arteriovenous malformations (AVMs), and disorders of abnormal function such as trigeminal neuralgia (TN).

The gamma knife delivers a single high dose of ionizing radiation emanating from 201 cobalt-60 sources. The highly focused beams of gamma rays are guided with surgical precision, without a scalpel, and without the usual risks of open neurosurgery. Most patients return home the same day and resume full activities within one or two days.

Gamma knife surgery was established as a subspecialty program of Neurological Surgery in 2003 in Winnipeg, the home of Canada's first gamma knife and GKS program. 

GKS has become a standard neurosurgical treatment option in many countries, wih aproximately 175 GKS centres worldwide treating over 25,000 annually. It is estimated that several thousand Canadians benefit from this treatment each year.

The safety and effectiveness of GKS has been carefully studied and documented in over 1500 specific papers.