TomoTherapy to Host Analyst and Investor Presentation at 2010 ASTRO Meeting in San Diego

MADISON, WI–(Marketwire – October 15, 2010) – TomoTherapy Incorporated (NASDAQ: TOMO) announced today that it will host an analyst and investor presentation in conjunction with the annual ASTRO (American Society for Radiation Oncology) meeting in San Diego, Calif., on Monday, November 1, 2010, at 8:00 a.m. PDT.

Analysts and institutional investors are invited to register for this event by visiting: http://www.tomotherapy.com/register/2010_astro_analyst_investor_presentation.
Space is limited and early registration is advised.

TomoTherapy’s management team will present an update on its business and highlights of new developments for the TomoTherapy^® radiation therapy platform. The company’s presentation will be Webcast. To access the live Webcast on November 1, 2010, go to the Investor Relations page of TomoTherapy.com and click on the Webcast icon. A replay of the Webcast will be available beginning at 11:00 a.m. PDT on the same day.

About TomoTherapy Incorporated
TomoTherapy Incorporated develops, markets and sells advanced radiation therapy solutions that can be used to treat a wide variety of cancers, from the most common to the most complex. The ring gantry-based TomoTherapy^® platform combines integrated CT imaging with conformal radiation therapy to deliver sophisticated radiation treatments with speed and precision while reducing radiation exposure to surrounding healthy tissue. TomoTherapy’s suite of solutions include its flagship Hi·Art^® treatment system, which has been used to deliver more than three million CT-guided, helical intensity-modulated radiation therapy (IMRT) treatment fractions; the TomoHD™ treatment system, designed to enable cancer centers to treat a broader patient population with a single device; and the TomoMobile™ relocatable radiation therapy solution, designed to improve access and availability of state-of-the-art cancer care. TomoTherapy’s stock is traded on the NASDAQ Global Select Market under the symbol TOMO. To learn more about TomoTherapy, please visit TomoTherapy.com.

©2010 TomoTherapy Incorporated. All rights reserved. TomoTherapy, Tomo, TomoDirect, TQA, the TomoTherapy logo and Hi·Art are among trademarks, service marks or registered trademarks of TomoTherapy Incorporated in the United States and other countries