News | Radiation Oncology | July 17, 2015

Accuray Presents CyberKnife System Data at AAPM Annual Meeting

Presentations center on accurate dose delivery with InCise Multileaf Collimator

Accuray, CyberKnife, AAPM 2015, InCise MLC, multileaf collimator

July 17, 2015 - Accuray Inc. announced that studies on the clinical use of the CyberKnife System continue to demonstrate the benefits of its precise, innovative treatment delivery techniques for stereotactic body radiation therapy (SBRT). More than 30 studies were presented during poster and oral sessions at the 57th Annual Meeting of the American Association of Physicists in Medicine (AAPM) held in Anaheim, California, July 12 – July 16, 2015.

Leading academic institutions, hospitals and cancer treatment centers are adopting the multileaf collimator (MLC) technology and seeing its benefits in significantly reduced treatment times for a wider range of tumor types. UPMC CancerCenter, Erasmus MC Cancer Institute and European CyberKnife Center Munich shared the first presented results on the use of the InCise MLC for the CyberKnife M6 System. These results showed the device was "very reliable," "highly accurate" and "mechanically stable."

Two dosimetric studies highlight the CyberKnife System's precision. Highlights include:

  • A study undertaken at UT Southwestern Medical Center compared the CyberKnife System and linear accelerator (linac) intensity-modulated radiation therapy (IMRT) plans of patients with early-stage larynx cancer. Researchers found the CyberKnife System was better able to reduce the radiation dose to normal tissue in high-dose regions. Clinicians can have the confidence to deliver an ablative dose to the tumor while sparing the immediately adjacent organs at risk; and
  • A second study showed the CyberKnife Multiplan treatment planning system provided better dose conformity and less dose to critical organs than volumetric modulated arc therapy (VMAT) stereotactic plans for patients with localized prostate cancer. The data demonstrated radiation dose delivery via multiple non-coplanar beams, with the CyberKnife System leading to high precision and tissue sparing. This research was conducted at Medanta - The Medicity hospital in Gurgaon, Haryana.


Accuray also hosted an educational symposium titled, "Precision in Practice with Accuray Technology" featuring Martina Descovich, Ph.D., assistant professor, Division of Physics, Department of Radiation Oncology at University of California San Francisco, and Saiful Huq, Ph.D., DABR, FAAPM, FInstP, professor and director of medical physics, Department of Radiation Oncology at UPMC CancerCenter in Pittsburgh, Pennsylvania, in addition to two invited presenters on the TomoTherapy System. Descovich discussed the center's clinical experience with an enhanced Synchrony Respiratory Tracking System on the CyberKnife System, and Huq shared UPMC's experience with the InCise MLC.

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