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Gamma Knife Perfexion: Advantages and Benefits 2017-01-28T09:35:42+00:00

Gamma Knife Perfexion: Advantages and Benefits

For more information or questions
about Gamma Knife at UAMS please
call 501-603-1800 or email the
UAMS Gamma Knife Coordinator
Karen Baxter-Rhodes, RN
at BaxterrhoadesKarenL@uams.edu.

There are numerous benefits to treatment with the Gamma Knife Perfexion including:

  • Designed solely to treat brain conditions, not other parts of the body
  • Extremely accurate, noninvasive treatment
  • No surgical incisions or general anesthesia
  • Performed in a single, outpatient treatment session
  • Covered by most insurance companies including Medicare
  • Quick return to pretreatment activities in 24 – 72 hours

Results for Conditions Commonly Treated with Gamma Knife:

The effects of Gamma Knife treatment occur over several months to several years depending on the condition treated. The goal of treatment with the Gamma Knife Perfexion is “control.” For brain tumors, the goal is tumor control defined as no further tumor growth. For vascular diseases, the goal for treatment is obliteration of the abnormal blood vessels. For functional disorders such as trigeminal neuralgia facial pain, the goal for treatment is reduction of or freedom from medications and pain.

More than 700,000 patients at over 200 facilities worldwide have been treated with the Gamma Knife. Listed below are the current clinical treatment results for several common Gamma Knife treatable conditions:

Acoustic Neuroma (vestibular schwannoma): A benign brain tumor found on or around the 8th cranial nerveClinical research reports long-term tumor control rates (5-15 years) in approximately 93-100% of patients. Pre-radiosurgery hearing can now be preserved in 60-90% of patients. For patients with intracanalicular tumors, hearing preservation can range from 73-100%.
Cerebral Arteriovenous Malformations (AVM): A abnormal connection between arties and veins in the brainTreated blood vessels gradually swell and close off blood flow through the malformation. Research shows approximately 70-90% of patients will reach total obliteration during a 2-6 year period. Gamma Knife can also be combined with other treatment techniques for this condition.
Meningioma: Typically benign brain tumors arising from the meninges covering the brainFor small tumors of 3 cm or less, research supports that approximately 93-98% of patients experience long-term tumor control of 5-10 years defined as tumor shrinkage or nor further tumor growth. Also effective in treating residual tumor tissue unable to be removed during surgery, and can be used in conjunction with conventional surgery for tumors larger than 4 cm.
Metastatic brain tumor: Cancer cells that have spread to the brainClinical research shows local tumor control provided by Gamma Knife treatment of brain metastases in any brain location generally exceeds 85%.
Pituitary Adenomas: Benign tumors on the pituitary gland; Can be both secreting or non-secreting tumorsGamma Knife is typically used in the treatment of residual or recurrent tumors following surgery. Clinical research supports tumor control rates for both non-secreting and secreting tumors to be between 70-90%. For secretory tumors, research supports approximately 50-60% of cases will achieve endocrine control in 12-60 months after treatment. Can be used as a primary treatment option when surgery is inadvisable.
Trigeminal Neuralgia: Disorder of the 5th cranial nerve on one branch or all of one side of the face; Also known as Tic DouloureuxCurrent literature reports the rate of initial pain relief ranges from 78-94% usually within 1-3 months after treatment. Long-term pain relief varies by center from 32-81%.