title: The CardioOP-Data Clas (CDC). Development and application of a thesaurus for content management and multi-user teleteaching in cardiac surgery.
abstract: OBJECTIVE
  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 CardioOP-DataClas (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-friend-liness, concept coverage and information retrieval performance.
authors.affiliation: Dept. of Heart Surgery, University of Ulm, Germany. reinhard.friedl@medizin.uni-ulm.de
authors.forename: R
authors.initials: R
authors.lastname: Friedl
authors.forename: W
authors.initials: W
authors.lastname: Klas
authors.forename: U
authors.initials: U
authors.lastname: Westermann
authors.forename: T
authors.initials: T
authors.lastname: Rose
authors.forename: J
authors.initials: J
authors.lastname: Tremper
authors.forename: S
authors.initials: S
authors.lastname: Stracke
authors.forename: O
authors.initials: O
authors.lastname: Gödje
authors.forename: A
authors.initials: A
authors.lastname: Hannekum
authors.forename: M B
authors.initials: MB
authors.lastname: Preisack
mesh_terms: D006348:Cardiac Surgical Procedures / Q000193:education*; D003196:Computer Graphics; D003194:Computer-Assisted Instruction; D006801:Humans; D019212:Multimedia; D009862:Online Systems; D018875:Vocabulary, Controlled