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Accuray is a U.S. medical technology company focused on radiation therapy and radiosurgery systems and related solutions.

Last updated November 4, 2026

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Overview

Accuray is a U.S. medical technology company serving the radiation oncology market with treatment systems, software and related services. Its activities focus on applications including precision radiosurgery, stereotactic radiation therapy and image-guided radiation therapy, with systems generally installed in hospitals and specialist cancer centers. Its best-known product families include the CyberKnife radiosurgery system and the Radixact helical tomotherapy system, which is based on the TomoTherapy technology platform. The brand emphasizes precision targeting, treatment planning, image guidance and motion management. In addition to equipment, Accuray provides software, upgrades, maintenance, clinical support and training. Accuray Incorporated is publicly traded on Nasdaq and serves international markets. Product availability and configurations vary by country according to regulatory approvals and company disclosures.

History

Accuray grew out of the development of precision radiation-treatment technology in the 1990s and built its CyberKnife product family around image-guided robotic radiosurgery. The system uses imaging and dynamically directed radiation delivery to provide highly focused treatments. As radiation oncology increasingly adopted image guidance, stereotactic treatment and patient-motion management, Accuray broadened its activities into a wider range of radiation-therapy solutions. The company later expanded into the helical tomotherapy field through the development and integration of the TomoTherapy technology platform, leading to the Radixact product family. Its business subsequently extended beyond equipment sales to treatment-planning software, image guidance, system upgrades, maintenance and clinical support. Accuray now operates as Accuray Incorporated and is listed on Nasdaq. Product portfolios, indications and geographic availability depend on local medical-device approvals.

  • 1990

    Origins of the Company

    [1]

    Accuray's business traces its origins to the development of precision radiation therapy technology in the 1990s.

  • Entry into Helical Tomotherapy

    [3]

    The company built around the TomoTherapy technology platform and developed the Radixact radiation therapy product line, expanding its product coverage in the radiation oncology market.

Products and positioning

Precision radiosurgery, stereotactic radiotherapy, and image-guided radiotherapy solutions

  • CyberKnife

    CyberKnife is Accuray's robotic radiosurgery product family. It combines image guidance with adjustable radiation delivery for highly precise, non-invasive radiation treatment of selected tumors or lesions. Indications and configurations vary by regulatory market.

  • Radixact

    Radixact is Accuray's helical tomotherapy radiation therapy system, derived from the TomoTherapy technology platform. It supports image-guided treatment and complex target irradiation together with treatment-planning and imaging capabilities.

  • TomoTherapy

    TomoTherapy is a radiation-therapy technology platform associated with Accuray's business. It is characterized by helical delivery and image guidance and forms the technological basis of the Radixact product family.

Recent events

  • Reported

    Accuray CFO Shig Hamamatsu announces resignation[5]

    Accuray CFO Shig Hamamatsu announced his resignation to pursue an opportunity in another industry; he was to remain CFO through September 3, 2021, to help ensure a smooth transition.

  • Reported

    Accuray appoints Brandy Green interim CFO[5]

    Accuray announced the appointment of Vice President and Corporate Controller Brandy Green as interim CFO, effective September 4, 2021.

  • Reported

    Accuray announces Suzanne Winter's promotion to president[6]

    Accuray announced that Suzanne Winter had been promoted to president, effective July 1, 2021. In the role, she will also oversee global manufacturing operations, the service organization, and quality and regulatory affairs.

  • Reported

    Accuray appoints Byron C. Scott to its board[7]

    Accuray appointed Byron C. Scott to its Board of Directors, effective February 12, 2021.

  • Reported

    Accuray receives FDA clearance for ClearRT imaging[8]

    Accuray reported that it received FDA 510(k) clearance for ClearRT Helical kVCT Imaging for the Radixact System.

  • Reported

    Accuray appoints Mike Leischer to lead the Americas region[9]

    Accuray announced that it had appointed Mike Leischer as vice president and general manager of its Americas region, effective immediately. He will lead the region's commercial teams and its business strategy.

  • Reported

    Accuray launches CyberKnife S7 System[10]

    Accuray announced the launch of the CyberKnife S7 System, a radiation therapy device for stereotactic radiosurgery and stereotactic body radiation therapy.

  • Reported

    Accuray launches CyberKnife S7 System[11]

    Accuray announced that it had launched the CyberKnife S7 System, a robotic radiation therapy device for treating tumors and neurologic disorders.

  • Reported

    Accuray updates fiscal 2020 adjusted EBITDA guidance[12]

    Accuray reaffirmed its fiscal 2020 revenue guidance and raised its adjusted EBITDA guidance to a range of $21 million to $26 million, from the previous range of $19 million to $24 million.

  • Reported

    Accuray reports fiscal 2020 first-quarter results[13]

    Accuray reported its financial results for the first quarter of fiscal 2020, including revenue of $89.6 million and a net loss of $9.4 million.

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