| Clinical Research on Accuray's CyberKnife? and TomoTherapy? Systems to Be Presented at Key Industry Event for Medical Physicists
 
 Accuray to Host an Educational Symposium Highlighting Enhanced Capabilities of
 Its CyberKnife and TomoTherapy Treatment Systems
 
 SUNNYVALE, Calif., July 29, 2012 /PRNewswire via COMTEX/ -- Accuray Incorporated
 (ARAY), the premier radiation oncology company, announced today that more than 70
 studies on the clinical use of the CyberKnife Robotic Radiosurgery? System and
 the TomoTherapy? System will be presented at the 54th Annual Meeting of the
 American Association of Physicists in Medicine (AAPM) taking place in Charlotte,
 N.C. July 29 - August 2, 2012. The Annual AAPM Meeting usually draws about 4,000
 attendees.
 
 Studies from leading centers will showcase both the CyberKnife System and the
 TomoTherapy System. The presentations continue to validate Accuray's
 standard-setting treatment planning and delivery techniques, accurate patient
 setup and intrafraction motion tracking, as well as quality assurance practices
 for the industry's premier, fully-integrated radiosurgery and intensity-modulated
 radiotherapy platforms. Of note are studies that emphasize the benefits of each
 technology in demanding clinical situations. Key examples are the TomoTherapy
 System's unmatched ability to provide organ sparing and dose homogeneity in
 hippocampal-avoidance whole brain radiotherapy and the CyberKnife System's
 ability to maintain continual tracking accuracy during treatment of liver tumors
 undergoing a large degree of respiratory motion.
 
 Accuray will also host a symposium on Monday, July 30, 2012 from 12:30 p.m. EDT -
 1:30 p.m. EDT at The Westin Charlotte Hotel. The session will focus on Accuray's
 new VoLO(TM) technology for the TomoTherapy System, a treatment planning platform
 that leverages advanced parallel processing technology and a new dose calculation
 algorithm to increase clinical efficiency, throughput and flexibility in
 developing even the most complex treatment plans. In addition, the symposium will
 highlight TomoTherapy's new Dose Control System, improving system stability
 during and between treatments.
 
 "Medical physicists play a vital role in the radiation therapy field, ensuring
 patient safety and treatment quality, two areas to which Accuray is strongly
 dedicated," said Euan S. Thomson, Ph.D., Accuray president and chief executive
 officer."We are pleased by the quantity and quality of clinical research being
 presented. This work adds to the growing body of scientific evidence validating
 the safe and effective use of our products for an expanding range of clinical
 indications."
 
 Accuray will be exhibiting at booth #909. Presenters include Robert Staton,
 Medical Physicist, MD Anderson Orlando who will be presenting on his experience
 with the TomoTherapy Dose Control System and Kenneth Ruchala, Ph.D., Accuray
 Incorporated who will be presenting information on the Non-Voxel Broad Beam
 algorithm for a GPU-based dose calculator. Additionally, Accuray will host
 demonstrations of its VoLO technology for the TomoTherapy System at the booth.
 
 The TomoTherapy System is a fully integrated 3D image guided intensity modulated
 radiation therapy system that provides patients with the most accurate,
 personalized cancer care. The technology uses daily computed tomography (CT)
 imaging to identify the exact position of the tumor on each day of treatment,
 enabling clinicians to customize treatment for each patient, minimize radiation
 exposure to healthy tissue and reduce side effects. The TomoTherapy System uses a
 radiation beam that continually rotates in 360 degree arcs about the patient,
 meaning that treatments can be delivered continuously to the tumor from every
 angle.
 
 The CyberKnife System is the first and only robotic radiosurgery system that
 provides a pain-free, non-invasive treatment option for patients who are looking
 for an alternative to surgery or who have an inoperable or surgically complex
 tumor. CyberKnife treatment is typically completed in just one to five days,
 instead of the 40 or more treatment sessions typically required with conventional
 radiation therapy. The CyberKnife System offers unique capabilities that
 automatically account for the natural motion of the tumor throughout treatment.
 The ability to manage motion in real time helps ensure that radiation is
 delivered only to the tumor while sparing healthy tissue and critical structures.
 
 About AccurayAccuray Incorporated (ARAY), based in Sunnyvale, Calif., is the
 premier radiation oncology company that develops, manufactures and sells
 personalized innovative treatment solutions that set the standard of care, with
 the aim of helping patients live longer, better lives. The Company's leading edge
 technologies - the CyberKnife and TomoTherapy Systems - are designed to deliver
 radiosurgery, stereotactic body radiation therapy, intensity modulated radiation
 therapy, image guided radiation therapy, and adaptive radiation therapy. To date
 635 systems have been installed in leading hospitals around the world. For more
 information, please visit accuray.com.
 
 Safe Harbor Statement Statements made in this press release that are not
 statements of historical fact are forward-looking statements and are subject to
 the "safe harbor" provisions of the Private Securities Litigation Reform Act of
 1995. Forward-looking statements in this press release relate, but are not
 limited, to reduced radiation exposure, accuracy, clinical efficiency, clinical
 applications, and clinical benefits. Forward-looking statements are subject to
 risks and uncertainties that could cause actual results to differ materially from
 expectations, including risks detailed from time to time under the heading "Risk
 Factors" in the Company's report on Form 10-K for fiscal year 2011, and its
 reports on Form 10-Q for the first, second and third quarters of fiscal 2012.
 Forward-looking statements speak only as of the date the statements are made and
 are based on information available to the Company at the time those statements
 are made and/or management's good faith belief as of that time with respect to
 future events. The Company assumes no obligation to update forward-looking
 statements to reflect actual performance or results, changes in assumptions or
 changes in other factors affecting forward-looking information, except to the
 extent required by applicable securities laws. Accordingly, investors should not
 place undue reliance on any forward-looking statements.
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