SUNNYVALE, Calif., June 27, 2012 /PRNewswire/ -- Accuray Incorporated (Nasdaq: ARAY), the premier radiation oncology company, announced today that doctors at the University of California, San Francisco (UCSF) Helen Diller Family Comprehensive Cancer Center in San Francisco, Calif. are now treating cancer patients with the TomoTherapy® System, the only radiation therapy system specifically designed for integrated, daily, 3D image-guided, intensity modulated radiation therapy (IG-IMRT). The TomoTherapy System, which stands out as one of the most advanced and comprehensive radiation therapy technologies available, is capable of treating a broad range of tumors—from the most common to the most complex—with speed and precision while reducing radiation exposure to surrounding healthy tissue. The TomoTherapy System will help clinicians at UCSF to treat a broader range of tumors as well as personalize and expand radiation treatment options available to cancer patients "At UCSF, we are dedicated to offering the most advanced cancer treatment options available in order to provide accurate and highly individualized care for each patient," said Mack Roach, III, Professor Radiation Oncology and Urology, Chair Radiation Oncology at UCSF Helen Diller Family Comprehensive Cancer Center. "Having a dedicated system built from the ground up to deliver IMRT treatments is a valuable addition to our suite of cancer care technologies." UCSF installed its TomoTherapy System in May 2012 to replace a standard linear accelerator and to date has treated malignant tumors in the prostate, rectum, bladder and gynecological treatments. In addition to its TomoTherapy System, the Center offers the CyberKnife® Robotic Radiosurgery System which is also manufactured by Accuray, as well as a full brachytherapy program, a proton beam system and other stereotactic body radiation therapy and radiosurgery systems to ensure each patient has access to the best treatment option for their unique case. The TomoTherapy System utilizes 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 critical structures and reduce side effects. Unlike conventional systems, which allow radiation to be delivered from only a few directions, the TomoTherapy System rotates as the patient moves through the system resulting in treatments that can be delivered continuously to the tumor from hundreds of angles. More beam directions give physicians more control in how the treatment is delivered—and more assurance that the dose will be confined to the tumor, reducing the risk of short- and long-term side effects.