Elekta AB has completed its acquisition of IMPAC Medical Systems, Inc., following approval of the transaction by IMPAC's stockholders.

On April 4, 2005, the stockholders of IMPAC approved the agreement with Elekta to merge IMPAC with a subsidiary of Elekta. Following the merger, which was effective today, IMPAC has become a wholly owned subsidiary of Elekta. Under the terms of the agreement and plan of merger, Elekta will pay USD 24.00 in cash for each share of IMPAC common stock outstanding. Effective today, IMPAC's common stock will no longer trade on the NASDAQ National Market.

Elekta is an international medical-technology Group, providing highly advanced clinical solutions for high precision radiation treatment of cancer and for non- or minimally invasive treatment of brain disorders. Clinical solutions include among others Leksell Gamma Knife for non-invasive treatment of brain surgery and Elekta Synergy for image guided radiation therapy (IGRT) as well as associated software systems.