Is Gamma Knife® right for me?


Most people will never face the need for brain surgery, but for those who do,
it’s reassuring to know that there is a non-invasive, high-precision treatment
— Gamma Knife radiosurgery.


Leksell Gamma Knife ® is clinically proven to non-invasively treat indications
in the brain ranging from very small target sizes of a few millimeters to several centimeters.
Contact your health professional to find out if Gamma Knife is the right choice for you.
Brain Metastases
Acoustic Neuroma
Vestibular Schwannoma
Pituitary Adenoma
Arteriovenous Malformation (AVM)
Pain & Movement
Essential Tremor
Trigeminal Neuralgia


Gamma Knife radiosurgery has become a preferred option for treating complex and “inoperable” tumors. It is often used as an alternative to surgery and/or whole brain radiation and — in some cases — is combined with those treatments.


While Gamma Knife was originally applied to patients with only a single brain metastasis as an alternative to craniotomy and removal (flowed by whole brain radiation therapy or WBRT), evidence indicates that disease control is possible in more than 80% of patients who undergo Gamma Knife radiosurgery alone for metastatic brain cancer.


The key to the success of Gamma Knife is its ability to accurately focus many beams of high-intensity gamma radiation to converge on one or more tumors. Each individual beam is relatively low energy, so the radiation has virtually no affect on healthy brain tissue.



  • Noninvasive – Despite its name, there is no knife. It’s called Gamma Knife because of the surgical precision and effectiveness. However, there’s no incision, no blood and no complications that occur with surgery.
  • Proven – Studies show that local control—meaning the specific tumor treated does not come back—exceeds an average of 85% for the management of tumors in any brain location.
  • High Dose of Evidence – Over 2,500 medical papers have been published on Gamma Knife surgery, and 800,000 patients have been treated worldwide. Other types of radiation treatment often claim to be as accurate and effective, but they don’t have the data and proven results of Gamma Knife.
  • Accurate – There is no other radiation treatment system as precise and accurate as Gamma Knife.
  • One treatment – The noninvasive Gamma Knife can isolate and deliver a high dose of radiation to one or more locations in the brain during a single treatment session.
  • Fast recovery – Most people leave the hospital the same day and resume normal activities.
  • Minimal side effects – Few people experience of a mild headache, which can be treated with an over-the-counter pain reliever. There is no loss of hair or nausea, as with some treatments.
  • Flexible – Because it’s noninvasive, Gamma Knife can be used to treat tumors or other disorders in surgically inaccessible areas of the brain, such as the brain stem.
  • Repeatable – Patients who develop new or growth of an existing tumor can be treated again with Gamma Knife.



Not everyone is a candidate for Gamma Knife surgery. Additionally not all surgeons have been trained in its use or have access to a Gamma Knife system, so they may be reluctant to recommend it to patients.

A Day with Gamma Knife


What to Expect?

A step-by-step guide to understanding Gamma Knife treatment.

Leksell Gamma
Knife® Icon ™

Icon is a dedicated radiosurgery system used to treat a broad range of brain disorders with the lowest dose to normal healthy tissue. Icon is equipped with integrated stereotactic Cone Beam CT (CBCT) imaging and software to continuously control the dose delivery. The system enables multiple or single sessions, frameless and frame-based immobilization.

Leksell Gamma Knife®
Perfexion ™

Perfexion is a dedicated radiosurgery system used to treat intracranial structures. Maximum precision is ensured by frame-based immobilization of the patient. Perfexion is designed to treat a broad range of brain disorders with a high level of accuracy.

How is Gamma Knife superior
to other radiosurgery systems?

Disclaimer: This information is not intended as a substitute for professional medical advice and does not provide advice on treatments or conditions for individual patients. All health and treatment decisions must be made in consultation with your physician(s), utilizing your specific medical information. The links set out on this website are provided for your convenience only.

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