Semantic Interoperability

Summary

Objectives: To meet the challenge for high quality and efficient care, highly specialized and distributed healthcare establishments have to communicate and co-operate in a semantically interoperable way. Information and communication technology must be open, flexible, scalable, knowledge-based and service-oriented as well as secure and safe.

Methods: For enabling semantic interoperability, a unified process for defining and implementing the architecture, i.e. structure and functions of the cooperating systems’ components, as well as the approach for knowledge representation, i.e. the used information and its interpretation, algorithms, etc. have to be defined in a harmonized way. Deploying the Generic Component Model, systems and their components, underlying concepts and applied constraints must be formally modeled, strictly separating platform-independent from platform-specific models.

Results: As HL7 Version 3 claims to represent the most successful standard for semantic interoperability, HL7 has been analyzed regarding the requirements for model-driven, service-oriented design of semantic interoperable information systems, thereby moving from a communication to an architecture paradigm. The approach is compared with advanced architectural approaches for information systems such as OMG’s CORBA 3 or EHR systems such as GEHR/openEHR and CEN EN 13606 Electronic Health Record Communication.

Conclusion: HL7 Version 3 is maturing towards an architectural approach for semantic interoperability. Despite current differences, there is a close collaboration between the teams involved guaranteeing a convergence between competing approaches.

Keywords

Health telematics - HL7 - model-driven architecture - electronic health record architecture - semantic interoperability

• References

• 1 Blobel B, Holena M. Comparing middleware concepts for advanced healthcare system architectures. Int J Med Inf 1997; 46: 69-85.
• 2 Blobel B.. Assessment of Middleware Concepts Using a Generic Component Model. Proceedings of the Conference “Toward An Electronic Health Record Europe ’97”. pp 221-8. London, October 20-23 1997;
• 3 ISO/IEC 10746-2 “Information technology - Open Distributed Processing - Reference Model”
• 4 Blobel B. Application of the Component Paradigm for Analysis and Design of Advanced Health System Architectures. Int J Med Inf 2000; 60 (003) 281-301.
• 5 Blobel B.. Concepts and Solutions for Future- Proof Health Information Systems and Health Networks. In Blobel B, Pharow P. (eds.) Advanced Health Telematics and Telemedicine. The Magdeburg Expert Summit Textbook, pp. 21-8. Series “Studies in Health Technology and Informatics” Vol. 96. IOS Press, Amsterdam 2003;
• 6 Blobel B. Analysis, Design and Implementation of Secure and Interoperable Distributed Health Information Systems. Series “Studies in Health Technology and Informatics” Vol. 89. Amsterdam: IOS Press 2002
• 7 Health Level Seven, Inc. http://www.hl7.org
• 8 Hinchley A. Understanding Version 3 - A primer on the HL7 Version 3 Communication Standard. Köln: Alexander Mönch Verlag 2002
• 9 Blobel B. HL7 and architecture standards of electronic health records (EHRs). In Ferrer-Roca O. (ed.) Proceedings XIII Winter Course: Ambient Intelligence in Medicine AmI@Medicine, pp 141-8. Tenerife, Canary Islands, Spain: CATAI edition 2004;
• 10 Jeckle M. Entwurf von XML-Sprachen. Java Spectrum 2000; 6: 56-60.
• 11 DICOM: “Digital Imaging and Communication in Medicine” 2003 http://www.rsna.org
• 12 openEHR Foundation. http://www.openehr.org
• 13 Beale T. An interoperable knowledge methodology for future-proof information systems. Mooloolah: Deep Thought Informatics Pty Ltd 2001
• 14 Comité Européen de Normalisation, TC 251 “Health informatics”. http://www.centc251.org
• 15 Object Management Group, Inc. CORBA Specifications. http://www.omg.org
• 16 Siegel J. Quick CORBA ® 3. New York, Chichester, Weinheim, Brisbane, Singapore, Toronto: John Wiley & Sons, Inc. 2001
• 17 Blobel B, Stassinopoulos G, Pharow P. Model- Based Design and Implementation of Secure, Interoperable EHR Systems. In Musen MA, Friedman CP, Teich JM. (eds.) AMIA 2003 Symposium “Biomedical and Health Informatics: From Foundations to Applications”. pp. 96-100. Bethesda: American Medical Informatics Association 2003 Proceedings 2003;
• 18 URL www.iis.fraunhofer.de/medtech/med_com/index_d.htm
• 19 Blobel B.. Educational Challenge of Health Information Systems’ Interoperability. Methods Inf Med 2006 (in print).