Dear Colleagues,

The 4th International Symposium on Ultrasound Contrast Imaging will be held in the clinical conference hall of the Tokyo Medical College Hospital during the two days of December 14 (Saturday) and 15 (Sunday). This will mark the first time this symposium will be held in Tokyo instead of its previous location in Kyoto.

The 3rd International Conference on Ultrasound Contrast Imaging was held at the Kyoto Research Park in November of last year. Although there were fewer participants from overseas due to the terrorist attacks in the US, a total of 230 persons from overseas attended the symposium. The latest information on such subjects as basic principles and clinical summaries following marketing of contrast agents were exchanged, and the symposium proved to be very significant for persons engaged in research on ultrasound contrast imaging.

Although symposiums on ultrasound contrast imaging have periodically been held in the US and Europe, international symposiums in this field were not held in Japan until the holding of the 1st symposium in the fall of 1999 following the approval and marketing of ultrasound contrast agents in Japan. It is therefore considered to be very important to again hold this symposium while inviting experts in this field from overseas, for which there are few in Japan, for the purpose of providing an opportunity for health care professionals in Japan to acquire the latest information on clinical applications.

The main theme for the 4th International Symposium on Ultrasound Contrast Imaging has been decided to be the "Fundamental and Clinical Aspects of Next-Generation Contrast Agents". We hope that this symposium will be both a meaningful and worthwhile conference focusing primarily on lectures describing leading-edge information, techniques and experiences given by experts from both at home and abroad relating to new contrast agents.

Simultaneous translation services will be provided for both lectures and presentations, and presenters will be called on to give poster presentations covering a wide range of subject matter. We would therefore like to earnestly request participation and presentations from as many persons as possible.

Sincerely yours,

Fuminori Moriyasu, M.D., Ph.D.
The 4th International Symposium
on Ultrasound Contrast Imaging
Chairman & Professor
4th Department of Internal Medicine,
Tokyo Medical University
Shintaro Beppu, M.D., Ph.D.
The 4th International Symposium
on Ultrasound Contrast Imaging
School of Allied Health Sciences,
Faculty of Medicine, Osaka University