We intended to develop a system that serves all of the personal computers in a hospital with DICOM images, which are now kept in Radiology Department. In this paper, we described the development of several prototypes. Through some years of development, we found out that the World Wide Web (WWW) is suitable for our intended purpose. Finally, we developed the server that combines the DICOM and the WWW. It features useful new technology, which gives the user a preview of a DICOM image.