Interface Will Be the First Complete Linear Accelerator DICOM-RT Interface And Will Facilitate Connectivity Between Elekta's Digital Linear Accelerators And IMPAC's Oncology Management System

MOUNTAIN VIEW, Calif., Dec. 2 /PRNewswire-FirstCall/ -- IMPAC Medical Systems, Inc. (Nasdaq: IMPC), a leading provider of information management solutions for cancer care, and Elekta, a world-leading supplier of advanced and innovative radiation oncology solutions and services, announce today their agreement to use a full DICOM-RT compliant specification for the development of an interface to connect the Elekta product lines of digital linear accelerators (Elekta Synergy(TM) and Precise Treatment System(TM)) with IMPAC's oncology information management products.

This interface will provide a vendor-independent means of facilitating universal connectivity of next-generation radiation treatment devices, such as linear accelerators and proton therapy delivery systems, as well as treatment simulation devices to information management systems. IMPAC and Elekta are the first to formally adopt the standard. Both companies have been working together towards this goal over the past months.

"This is a collaborative development effort aimed at improving the process of managing increasingly complex cancer treatment techniques," stated Joseph K. Jachinowski, president and CEO of IMPAC. "IMPAC is delighted to team with Elekta in this agreement to adopt the DICOM-RT standard in a complete manner," he added.

"This agreement will further improve seamless connectivity for customers by expanding the use of new technology systems as well as shorten the start-up time for new and expanding cancer centers," stated Tomas Puusepp, president and CEO of Elekta, Inc. "More importantly, patients will benefit from a more rapid deployment of leading edge treatments. We encourage all oncology vendors to join Elekta and IMPAC in adopting this standard."

About IMPAC Medical Systems

IMPAC Medical Systems, Inc. is a leading provider of specialized IT solutions that streamline both clinical and business operations to help improve the process of delivering quality patient care. With open integration to multiple healthcare data and imaging systems, IMPAC offers a comprehensive IT solution that includes specialized electronic charting, full-featured practice management, clinical laboratory management, and outcomes reporting. Supporting over 1600 installations worldwide, IMPAC delivers practical solutions that deliver better overall communication, process efficiency and quality patient care. For more information about IMPAC Medical Systems' products and services, please call 1-650-623-8800 or visit www.impac.com.

About Elekta

Elekta is a world-leading supplier of advanced and innovative radiation oncology and neurosurgery solutions and services for precise treatment of cancer and brain disorders. Elekta's solutions are clinically effective, cost efficient and gentle on the patient. For additional information about Elekta, please visit www.elekta.com.

The statements contained in this press release that are not purely historical are forward looking statements within the meaning of Section 21E of the Securities and Exchange Act of 1934, including statements regarding the Company's expectations, beliefs, hopes, intentions or strategies regarding the future. Forward looking statements include statements regarding the Company's business strategy, timing of, and plans for, the introduction of new products and enhancements, future sales, market growth and direction, competition, market share, revenue growth, operating margins and profitability. All forward-looking statements included in this document are based upon information available to the Company as of the date hereof, and the Company assumes no obligation to update any such forward-looking statement. Actual results could differ materially from the Company's current expectations. Factors that could cause or contribute to such differences include the Company's ability to expand outside the radiation oncology market or expand into international markets, lost sales or lower sales prices due to competitive pressures, ability to integrate its products successfully with related products and systems in the medical services industry, reliance on distributors and manufacturers of oncology equipment to market its products, and other factors and risks discussed in the Company's 10-K and other reports filed by the Company from time to time with the Securities and Exchange Commission.

For more information, please contact: Julie DeSantis Public Relations Manager IMPAC Medical Systems 1-650-623-8883 pr@impac.com

SOURCE IMPAC Medical Systems, Inc. 12/02/2003 /CONTACT: Julie DeSantis, Public Relations Manager of IMPAC Medical Systems, 1-650-623-8883, or pr@impac.com/ /Web site: http://www.impac.com / (IMPC)