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Gamma Knife
Gamma knife. The gamma knife, used for a procedure known technically
as stereotactic gamma knife radiosurgery, combines precise
stereotactic guidance and a sharply focused beam of radiation energy
to deliver a single, precise dose of radiation. Despite its name, the
gamma knife does not require a surgical incision. Investigators using
this tool have found it can help them reach and treat some small
tumors that are not accessible through surgery.
Indications
Gamma Knife radiosurgery is most appropriate for those who have benign
or malignant brain tumors that are less than about one and one-third
inches (3.5 centimeters) in diameter.
- Single or multiple metastatic tumors
- Meningioma
- Acoustic neuroma (vestibular schwannoma)
- Trigeminal neuralgia (tic douloureux) - one cause of severe
facial pain
- Arteriovenous malformation
- Glioma (glioblastoma, astrocytoma, oligodendroglioma)
- Pituitary tumor (adenoma)
- Craniopharyngioma
- Hemangioblastoma
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The response of any given tumor to radiotherapy is dependent on many
factors. Gamma Knife technology is approved by the Food and Drug
Administration and the results of treatment have been studied in
detail and have been published in peer-reviewed medical journals.
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