Summary
Objectives: Self-directed and customized medical education programs are gaining importance in
health care instruction. We prototypically implemented a repository-driven online
computer system (CardioOP) for teleteaching in Heart Surgery. It supports authoring and multiple re-use of
multimedia data for different user groups in different instructional applications
and therefore requires a process of content management.
Methods: We defined objectives for a terminological system to support semantic, cross-media
type annotation and retrieval of learning objects: domain completeness, German (natural)
language processing, multi-user concepts, extensibility and maintenance, content based
annotation and technical implementation. Existing terminologies (ICD10, READ V3, Snomed
III, UMLS 1997, MESH) have been analysed according to these objectives.
Results: We found that the analysed terminologies did not meet our criteria sufficiently.
Therefore, we developed a domain-specific thesaurus, the CardioOPDataClas (CDC). The application of the CDC within a database-driven authoring process using specifically developed tools is
reported.
Conclusions: Metadata play an important role in the effective discovery and search, access, integration
and management of educational multimedia data in medicine but so far, there is no
terminology to support content management for instructional multimedia. We prototypically
designed and applied a thesaurus for the CardioOP educational system. Additional work is needed to evaluate the system in terms of
user-friendliness, concept coverage and information retrieval performance.
Keywords
Computer assisted instruction - multimedia - terminology - information management