TomoTherapy to Present at 19th Annual Piper Jaffray Healthcare Conference in New York City

Business Wire, Nov 21, 2007

MADISON, Wis. -- TomoTherapy Incorporated (NASDAQ: TTPY) today announced that Dr. Fred Robertson, CEO, and Steve Hathaway, CFO, will present at the 19th annual Piper Jaffray Healthcare Conference on Wednesday, November 28, at 2:30 p.m. ET. The conference is taking place November 27-29, 2007, at The Pierre Hotel in New York City.

A live Webcast of the presentation will be available on the investor relations page of TomoTherapy's Web site at www.tomotherapy.com. For those who are unable to listen at the time of the presentation, an archive of the Webcast will be available on the company's site for 30 days following the presentation.

About TomoTherapy Incorporated

TomoTherapy Incorporated has developed, manufactures and sells the TomoTherapy([R]) Hi*Art([R]) treatment system, an advanced radiation therapy system for the treatment of a wide variety of cancers. The Hi*Art treatment system 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. The company completed its initial public offering in May 2007 and its stock is traded on the NASDAQ Global Market under the symbol TTPY. To learn more about TomoTherapy, please visit our Web site at www.TomoTherapy.com.

(c)2007 TomoTherapy Incorporated. All rights reserved. TomoTherapy, the TomoTherapy logo and Hi*Art are among trademarks, service marks or registered trademarks of TomoTherapy Incorporated.