MADISON, Wis.--(BUSINESS WIRE)--TomoTherapy Incorporated (NASDAQ: TOMO), maker of the Hi·Art® treatment system for advanced, CT platform-based radiation therapy, announced today that it has again earned the highest user satisfaction composite rating among linear accelerator vendors in MD Buyline’s Quarterly User Satisfaction Report, published on Jan. 1, 2009. The composite score for TomoTherapy topped that of conventional linear accelerator suppliers Varian Medical Systems, Elekta and Siemens for the third time in the last four quarters.