Gamma Knife Radiosurgery

Physicians use Gamma Knife radiosurgery as a non-surgical method to target specific areas of the brain. Rather than performing invasive surgery to remove a tumor or lesion by opening the skull, this treatment employs precise gamma irradiation beams to treat the affected area externally, making it non-invasive.

Gamma Knife employs 192 beams of gamma irradiation to precisely target the tumor or lesion without using a knife. The beams meet at a single point with extreme accuracy, less than one-tenth of a millimeter, minimizing exposure to healthy tissue. This non-invasive treatment may result in a shorter recovery time than traditional surgery. It can target the smallest and most difficult brain tumors or lesions while preserving healthy tissue and organs. Stereotactic radiosurgery, also known as Gamma Knife radiosurgery, can be an alternative to whole brain radiation therapy for multiple brain metastases.

Conditions Treated by Gamma Knife


  • Brain Metastases
  • Acoustic Neuroma/Vestibular Schwannoma
  • Meningioma
  • Glioblastoma
  • Pituitary Adenoma


  • Arteriovenous Malformation (AVM)


  • Essential Tremor
  • Trigeminal Neuralgia

Want to find out if Gamma Knife could be the right treatment option for you? Talk to your health professional!

How is Gamma Knife radiosurgery different?


Lower dose to normal brain tissue

Leksell Gamma Knife is better at sparing normal brain tissue than other devices


Lower dose to the body

Compared with other devices


More clinical publications

Than other devices combined