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CyberKnife robotic radiosurgery system is shown to offer spinal tumour benefits

Accuray : 20 February, 2007  (New Product)
Accuray has released clinical data to show the use of its CyberKnife Robotic Radiosurgery System in the treatment of spinal tumours has increased by 56 percent between December 2005 and December 2006.
Success of this non-invasive procedure, which avoids potential damage to the spinal cord, is further validated by a study of 500 spinal tumour patients. The study results were published in the January 15 issue of the journal Spine.

Tumours in the spine, particularly metastatic tumours, are difficult to remove surgically and are challenging to treat with radiation because of their close proximity to the spinal cord. Damage to the spinal cord can result in loss of movement, feeling or even paralysis.

“Because the spine moves, there is a high risk with treatments such as those delivered by radiation therapy devices that the spinal cord could move into the radiation field,“ said Eric P Lindquist, senior vice president and chief marketing officer at Accuray.' With Accuray’s CyberKnife System, which tracks tumour and patient movement during treatment, the risk of damage to surrounding healthy tissue and critical structures, like the spinal cord, is minimised.”

Accuray is a pioneer in the radiosurgical treatment of spinal tumours. The company’s CyberKnife Xsight Spine Tracking System is a breakthrough in tracking technology. It is the first and only system that uses the internal anatomy to directly track tumours with radiosurgical precision without the need for external frames or implanted fiducials. The Xsight System registers unique non-rigid and bony anatomy landmarks to track, detect and correct for the movement of the spine in real-time throughout the treatment. The system allows doctors to deliver high doses of radiation with sub-millimetre accuracy while avoiding damage to healthy tissue.

“We’ve had tremendous success with the CyberKnife System in treating patients with complex spinal tumours,” said Dr. Peter Gerszten, lead author of the study. “The results of our study demonstrate the CyberKnife System’s effectiveness in controlling tumour progression and minimising any associated side effects.”

The study, entitled “Radiosurgery for Spinal Metastases: Clinical Experience in 500 Cases From a Single Institution”,was conducted at the University of Pittsburgh Medical Center in Pittsburgh, Pennsylvia, USA, and included 500 patients ages 18 to 85 with tumours in all parts of the spine.

“When I learned I had a tumour on my spinal cord, doctors told me that without surgery I would be paraplegic but that the extremely delicate and risky surgery would involve removing ribs and intestines,” said Carol Alfaro, a spinal patient. “I opted for treatment with the CyberKnife System and with just three, pain-free outpatient visits, I had my life back.”

By eliminating the need for invasive surgery, the CyberKnife System allows patients to recover more quickly, experience fewer complications and immediately resume regular daily activities after treatment.
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