The solicitation and the offer to purchase shares of Vital Images' common stock are being made pursuant to the Offer to Purchase, a related Letter of Transmittal and other tender offer documents that have been filed by Merger Sub, TMSC and Toshiba with the U.S. Securities and Exchange Commission (the "SEC") on May 11, 2011, on a Tender Offer Statement on Schedule TO. In addition, on May 11, 2011, Vital Images filed with the SEC a Solicitation/Recommendation Statement on Schedule 14D-9 with respect to the tender offer. Shareholders of Vital Images are strongly advised to read these documents carefully because they contain important information that shareholders should consider before making any decision with respect to the tender offer.