Interoperability has the potential to improve care processes and decrease costs of the healthcare system. The advent of enterprise ICT solutions to replace costly and error-prone paper-based records did not fully convince practitioners, and many still prefer traditional methods for their simplicity and relative security. The Medicoordination project, which integrates several partners in healthcare on a regional scale in French speaking Switzerland, aims at designing eHealth solutions to the problems highlighted by reluctant practitioners. In a derivative project and through a complementary approach to the IHE XDS IT Profile, we designed, implemented and deployed a prototype of a semantic registry/repository for storing medical electronic records. We present herein the design and specification for a generic, interoperable registry/repository based on the technical requirements of the Swiss Health strategy. Although this paper presents an overview of the whole architecture, the focus will be on the registry, a federated semantic RDF store, managing metadata about medical documents. Our goals are the urbanization of information systems through SOA and ensure a level of interoperability between different actors.
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