TomoTherapy Tops MD Buyline Rankings for Second Straight Quarter

Business Wire, July 2, 2008

MADISON, Wis. -- TomoTherapy Incorporated (NASDAQ: TOMO), maker of the TomoTherapy([R]) HioArt([R]) treatment system for advanced radiation therapy, has earned top honors in MD Buyline's user satisfaction rankings for the second consecutive quarter, solidifying its position as the customer service leader in linear accelerator-based radiation therapy.

MD Buyline measures user satisfaction based on evaluations by more than 3,300 hospitals in the member network. Members rank their satisfaction in six areas: system performance; system reliability; installation and implementation; applications training; service response time; and service repair quality. TomoTherapy ranked number one in overall composite score, and either first or second in each contributing category. The ratings appear in MD Buyline's Quarterly User Satisfaction Report, which was published on July 1, 2008.

Said Fred Robertson, CEO of TomoTherapy: "We are once again very pleased to be listed atop MD Buyline's quarterly rankings of radiation therapy vendors. It's a significant accomplishment for us, especially considering the company's relative youth and the next-generation nature of the HioArt platform. Our employees should be proud of their hard work. It's clearly making a difference."

In rating TomoTherapy, MD Buyline wrote, "TomoTherapy is the only vendor for the CT-based linear accelerator which delivers radiation dose in a helical or fan beam fashion. Elekta, Siemens and Varian offer IMRT and IGRT options on conventional linear accelerator systems."

MD Buyline is a market intelligence organization founded in 1983. It provides the healthcare industry with independent analysis and reporting.

About TomoTherapy Incorporated

TomoTherapy Incorporated has developed, markets and sells the TomoTherapy([R]) HioArt([R]) treatment system, an advanced radiation therapy system for the treatment of a wide variety of cancers. The HioArt 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's stock is traded on the NASDAQ Global Select Market under the symbol TOMO. To learn more about TomoTherapy, please visit TomoTherapy.com.

[c]2008 TomoTherapy Incorporated. All rights reserved. TomoTherapy, CTrue, the TomoTherapy logo and HioArt are among trademarks, service marks or registered trademarks of TomoTherapy Incorporated.