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What to Expect

Contrary to its name, there is no knife in Gamma Knife®. No incisions are involved in this safe and effective procedure used for more than 30,000 patients every year. Read More »

For Referring Physicians

Non-invasive Gamma Knife offers hope for patients with tumors formerly considered inoperable and those considered high-risk for open surgical procedures due to illness or other conditions. Read More »


Brain Surgery without a Scalpel

Gamma Knife is a non-invasive option for treating many types of brain tumors and disorders. It typically requires just a single treatment session, and its extreme accuracy helps protect healthy brain tissue.

In a single session, Gamma Knife delivers an intense radiation dose with pinpoint precision. Surrounding tissue receives very little radiation, resulting in low risk of side effects. Patients experience little discomfort; returning home the same day and resuming activities within a day or two. Treatment effectively slows or arrests lesions over just a few weeks or months. Learn More »

About Our Center

Medical CenterSouth Sound Gamma Knife, at St. Joseph Medical Center in Tacoma, WA is the only Gamma Knife facility located between Seattle, WA and Portland, OR. It offers patients throughout the region a specially designed new facility, state-of-the-art technology, and an unparalleled multidisciplinary team of neurosurgeons, radiation oncologists, radiation physicists, nurses and support staff, all of whom are at the very tops of their professions. Read More »