Stereotactic radiosurgery is a medical
procedure that utilizes very accurately targeted, large killing doses of
radiation. This noninvasive operation has proven to be an effective
alternative to surgery or conventional radiation for treating many small tumors and a few
other select medical disorders.
and read reviews here and
There is evidence that giving the radiation in large single doses and fewer treatments or fractions (called hypofractionation) may be more effective than conventional treatment (multiple fractions of small doses, called fractionated radiation) The safe and proper dose is much different. See the tables for brain here and tables on doses for single fraction or three fractions or five fractions
Conditions treated with Cyberknife:
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The CyberKnife System was first developed in 1987 by a team at Stanford lead by John R. Adler, M.D., a professor of neurosurgery and radiation oncology at Stanford University Medical Center. Dr. Adler had the vision to develop a non-invasive robotic radiosurgery system with superior accuracy for treatment of tumors anywhere in the body. The revolutionary concept reached far beyond the practice of radiosurgery at the time, which restricted radiosurgery to the treatment of intracranial tumors. In 1990, Accuray Incorporated was founded.
Accuray first received FDA clearance for the CyberKnife System in 1999 for the treatment of tumors in the head, neck and upper spine. Then in 2001, the company received FDA clearance to introduce enhancements to the CyberKnife System for the treatment of tumors anywhere in the body.