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Las Vegas Prostate Cancer Center

7150 W. Sunset Road
Las VegasNevada 89113

Office: (702) 834-3961
Fax: (702) 586-1319

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Not All Radiation Therapy is the Same:

In cities throughout the United States the Cyberknife is being marketed extensively as an alternative to Intensity Modulated Radiation Therapy (IMRT) and Image-Guided Radiation Therapy (IGRT) for the treatment of prostate cancer.

Unfortunately this effort has the potential to confuse patients regarding what is the safest, most effective radiation treatment option for prostate cancer.

Cyberknife technology, which delivers a type of high-intensity radiation called Stereotactic RadioSurgery, was initially developed as a method to treat tumors in places that were inaccessible to physical surgery, the brain for example. When used in other parts of the body, such as the prostate, it is called Stereotactic Body Radiation Therapy, or SBRT. High-intensity SBRT treatments are done utilizing between two and five radiation fractions that have a much higher daily dose than is given by IMRT / IGRT. The long-term side effects from this type of treatment are unknown.

The American Society for Therapeutic Radiology and Oncology (ASTRO), the largest organization of its kind in the United States, has also weighed in about SBRT for treatment of prostate cancer. ASTRO released a statement that declared, in part, “there is not sufficient or mature data to demonstrate equivalency to existing standard treatment modalities and, in our view, SBRT for prostate cancer patients does not represent a standard of care.”1

The Center believes it is important that patients know the facts about this important issue.

1 - Position Statement - American Society for Therapeutic Radiology and Oncology (ASTRO) Regarding: Stereotactic Body Radiation Therapy (SBRT) for the Definitive Management of Early-Stage, Low-Intermediate Risk Prostate Cancer, October 2008.