In this paper, a complete concept will be shown, to build a cheap, modular, internet/intranet-based radiologic information system for hospitals or settled M.D.'s. The goal of this system is to achieve internal/external access to DICOM-data, which are produced and archived in the several image-producing departments. Using the DICOM-standard as well as modern, platform independent Java programming and internet/intranet technology this goal can be reached. Core of the whole system is a PACS. Integration of all digital modalities by the DICOM standard is an esssential proposal of the system's concept. Core of the PACS' archiving system is a central relational data base.