Press releases

Annual General Meeting

The Board of Directors of RaySearch Laboratories AB (publ) hereby announces that the company’s Annual General Meeting scheduled for May 10, 2006, notification of which has been published, is being postponed and that the new date for the Annual General Meeting is June 29, 2006. The reason is that the Annual Report, which is already printed, in so far as references to the pending agreement with Philips pertaining to adaptive radiation therapy are concerned, unfortunately would contain incorrect information since it is assumed in the Annual Report that the agreement has been concluded. This is due in turn to the fact that Philips’ signing of the agreement, which the two parties have approved, has taken considerably longer time than RaySearch had reason to anticipate. RaySearch signed the agreement already on March 17, 2006, and received at that time, and on later occasions, indications that signing by Philips would occur considerably faster than has been the case. At the same time, the Board wishes to emphasize that RaySearch does not foresee any reason to believe other than that the agreement will be signed by both parties in the near future. Philips is a very large organization within which the decision process is long. In addition, there is information that Philips has just initiated a new system for processing contracts, which further delays the process. The Board regrets any inconvenience that may arise for the shareholders as a result of the change in the date for the Annual General Meeting. At a later date, RaySearch will publish a formal notification of the Annual General Meeting with the new date. Stockholm, April 26, 2006 Board of Directors For further information: Johan Löf President and CEO, RaySearch Laboratories AB Telephone: +46 (0)8-545 061 30 About RaySearch RaySearch develops and markets software for radiation therapy of cancer. The products are specially designed to optimize radiation therapy with the aim of adapting the radiation dose to the contour of the tumor, which then allows high doses to be delivered to the tumor while minimizing the dose to surrounding healthy tissue. RaySearch, a spin-off from Karolinska Institutet, was formed in 2000. The company has since sold its product RayOptimizer to more than 800 hospitals internationally through a licensing agreement with Philips, thus enabling more than 100,000 patients to receive improved radiation therapy. Sales through Philips of the products RayBiology and RayMachine began in 2004. RaySearch signed a licensing agreement with Nucletron at the beginning of 2004. The latter agreement made RaySearch's products available to a large number of additional clinics worldwide and, consequently, increased the number of potential customers sharply. Delivery to clinics of OM-Optimizer, the first product based on the partnership with Nucletron, began in April 2005. In May 2005, RaySearch signed a Letter of Intent with Philips for the development of products within adaptive radiation therapy. In February 2006 an agreement was signed with Scanditronix-Wellhöfer regarding development of products for improved quality assurance for IMRT. RaySearch was listed on the Stockholm Stock Exchange’s O-List in November 2003 and as of July 1, 2005, RaySearch is listed in the Attract40 segment. RaySearch is based in Stockholm and currently has 29 employees. RaySearch Laboratories AB (publ) Sveavägen 25 SE-111 34 Stockholm Telephone: +46 (0)8–545 061 30 Company website: