Clinical Evidence Grows in Support of CyberKnife Treatment for Intracranial and Extracranial Tumors
CyberKnife Users' Meeting Highlights Clinical Studies and Emerging Trends in Brain, Lung and Prostate Radiosurgery
This year's CyberKnife Users' Meeting attracted more than 500 attendees,
including surgeons, radiation oncologists, medical physicists, hospital
administrators and other related clinical staff. More than 15 percent of
those in attendance traveled from outside of the
At this year's meeting, nine presentations reported on large-scale studies, each with more than 100 patients with brain, lung or prostate tumors. The 2009 Users' Meeting included 11 presentations related to prostate cancer treatment, with follow-up data approaching three years for many patients. In addition to updated outcomes with longer follow-up, researchers are extending CyberKnife applications for prostate cancer beyond early-stage disease. For example, clinicians discussed their use of CyberKnife radiosurgery to "boost" the radiation dose after conventional radiation therapy for patients with advanced disease, as well as for the treatment of recurrent cancer in patients that failed conventional radiation therapy.
The adoption of CyberKnife radiosurgery for the treatment of lung cancer continues to grow, a trend that was supported by 11 clinical lung cancer presentations. Presenters reported on primary and metastatic lung cancer, the treatment of recurrence after radiation therapy and chemotherapy, and quality of life after lung cancer treatment. In one study, patients showed 94 percent local control of lung tumors at a median follow-up of 33 months.
CyberKnife advantages continue to be extended in brain cancer and other brain disorders. Multiple presentations highlighted the CyberKnife System's frameless capability to conveniently treat in multiple sessions -- a particularly beneficial capability when lesions are near sensitive critical structures such as those that control vision and hearing. In one study of 114 acoustic neuroma patients, the authors concluded that the CyberKnife System's abilities made radiosurgical treatment possible for more than 13 percent of patients who could not have been treated with single-session radiosurgery because of risk of hearing loss.
"The presentations and posters at this year's Users' Meeting were
representative of the increased interest in CyberKnife radiosurgery,
particularly for the treatment of lung and prostate cancer, given its
unrivaled ability to accurately track and treat tumors that move," said
About the CyberKnife(R) Robotic Radiosurgery System
The CyberKnife Robotic Radiosurgery System is the world's only robotic radiosurgery system designed to treat tumors anywhere in the body non-invasively. Using continual image guidance technology and computer controlled robotic mobility, the CyberKnife System automatically tracks, detects and corrects for tumor and patient movement in real-time throughout the treatment. This enables the CyberKnife System to deliver high-dose radiation with pinpoint precision, which minimizes damage to surrounding healthy tissue and eliminates the need for invasive head or body stabilization frames.
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