What Makes Gamma Knife® Superior?

NOT ALL RADIOSURGERY SYSTEMS ARE CREATED EQUAL

Discover why Gamma Knife is the gold standard
for the treatment of brain conditions.
  • Linear Accelerator
    (LINAC)




    Treats Multiple Areas of the Body
    Linear Accelerators are designed to
    address a diverse range of clinical needs
    throughout the body.




    Extra Margin Commonly
    Added Surrounding the Target

    Extra margin or volume surrounding the
    target is commonly added to compensate
    for any possible shifts of the target.




    Radiation Source Moves
    During Treatment

    Linear Accelerators rotate during the
    delivery of radiation. The source of radiation
    and the target are continually changing,
    introducing a source of potential error.








    Higher Dose to Healthy Brain
    During treatment to the brain, documented
    evidence reveals Linear Accelerator systems
    deliver two to three times more dose to
    normal brain and four to 100 times more
    dose to the body compared with Gamma Knife.


    Volume of Brain Receiving
    4 Gy of Radiation







    Multiple-Day Treatment
    Treatment is typically delivered in 3 to
    5 sessions over multiple days. (Multiple
    treatments are also referred to as
    fractionated delivery).








































































  • Gamma Knife®
     




    Exclusively for the Brain
    Gamma Knife’s fine-beam technology
    is specifically designed to treat delicate
    brain tissue.




    Extra Margin Rarely
    Added Surrounding the Target

    Extra margin or additional volume
    surrounding the target is rarely added
    — sparing healthy brain tissue.




    Radiation Source Remains
    Fixed During Treatment

    With Gamma Knife there are no moving
    parts during the delivery of radiation. The
    source of radiation and the target are always
    in a fixed relationship during treatment,
    ensuring the highest degree of accuracy.








    Least Dose to Healthy Brain
    Documented evidence reveals that during
    treatment to the brain, Gamma Knife delivers
    two to three times lower dose to normal
    brain and four to 100 times lower dose to
    the body compared with other radiosurgery devices.


    Volume of Brain Receiving
    4 Gy of Radiation







    Typically a One-Day Treatment
    With Gamma Knife, treatment
    is typically delivered in a few hours
    on a single day.
 
Source: McDonald D, Sculer J, Takacs I, Peng J, Jenrette J, Vanek K. Comparison of radiation dose spillage from the Gamma Knife Perfexion with that from volumetric modulated arc radiosurgery during treatment of multiple brain metastases in a single fraction. J Neurosurg. 2014;121(Suppl 2):51–9
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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76,000 patients treated every year. Find a center near you.

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