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What is the Gamma Knife procedure?

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Quick Answer

According to the Mayo Clinic, Gamma Knife radiosurgery is an alternative treatment for traditional brain surgery. Gamma Knife therapy provides radiation directly to the tumor without a physical incision to the skull.

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In this kind of radiosurgery, nearly 200 beams of radiation are targeted on the problem area in the brain, explains the Mayo Clinic. While each beam causes only a minimal effect on brain tissue it passes through, the point at which the beams meet delivers a strong dose of radiation on the tumor. Gamma Knife radiosurgery can be completed in one day and is the preferred method when a tumor is in a particularly difficult-to-reach place or the patient is not in good enough health to undergo traditional brain surgery.

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