TomoTherapy to Participate in Two Upcoming Investment Conferences

MADISON, WI–(Marketwire – November 24, 2010) – TomoTherapy Incorporated (NASDAQ: TOMO), maker of advanced radiation therapy solutions for the treatment of cancer and other diseases, today announced that President and CEO Fred Robertson, M.D., will participate in two upcoming investment community conferences.

On Tuesday, November 30, 2010, Dr. Robertson will present at the Piper Jaffray Healthcare Conference at 3:00 p.m. EST. The conference will be held November 30 – December 1 at The New York Palace hotel in New York City, NY. A live Webcast of the presentation will be available on the Investor Relations page of TomoTherapy.com. For those who are unable to listen to the live presentation, an archive of the Webcast will be available on the company’s site for 30 days following the presentation.

On Thursday, December 2, 2010, Dr. Robertson will attend the Lazard Capital Markets Med Tech/Life Sciences Tools Day, where he will be available for interviews throughout the day. The conference is being held at JW Marriott Denver Cherry Creek in Denver, Colo.

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.

(C)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.