New VoLO™ Technology Delivers Greater Efficiency and Flexibility in Complex Treatment Planning; Demonstrates Accuray's Ongoing Commitment to Advancing Radiation Oncology

SUNNYVALE, Calif. - Accuray Incorporated (Nasdaq: ARAY), the premier radiation oncology company, announced today the availability of VoLO™ Technology for the TomoTherapy® System, a new treatment planning system that leverages advanced graphics processing technology and a new calculation algorithm to increase clinical efficiency, throughput and flexibility in developing even the most complex radiation plans.

The new VoLO solution features high-speed parallel processing for both dose calculation and optimization, based on Graphics Processing Unit (GPU) technology - a "first" for radiation oncology treatment planning. In addition, VoLO represents the first use of a new Non-Voxel Broad Beam (NVBB) calculation algorithm that takes advantage of both the GPU's unparalleled speed and the TomoTherapy Systems unique beamlet radiation delivery system to develop dose distributions from the perspective of each beamlet (up to tens of thousands in any given plan) as they pass through the patient's body. VoLO technology empowers clinicians to create highly personalized treatment plans in less time with greater flexibility, increasing the efficiency of the radiation oncology staff. The technology enhancements provide physicists and dosimetrists with the tools needed to work interactively and in real time to develop the best intensity-modulated radiation therapy (IMRT) treatment plans for even the most complex cases.
"GPU technology is finding application in a variety of scientific disciplines and is well suited for radiotherapy. GPU computing helps facilitate treatment planning for computationally demanding applications by allowing our physicists and dosimetrists to develop plans in less time, thereby increasing the department's overall throughput and maximizing our clinical resources," said David Westerly, Assistant Professor in the department of Radiation Oncology at the University of Colorado School of Medicine. "The use of GPU technology also promotes greater collaboration and flexibility in the treatment planning process, which in turn ensures that our patients receive the best radiation treatment and cancer care possible."

"With VoLO, clinicians are able to create optimal patient treatment plans more efficiently, a development that will further improve patient care and allow for more patients to benefit from TomoTherapy treatments," said Euan S. Thomson, Ph.D., president and CEO of Accuray. "The introduction of this advanced treatment planning technology delivers on our promise to continually enhance performance of the TomoTherapy System while strengthening our position as a leader in radiation oncology innovation."

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