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Mapping between SNOMED RT and Clinical terms version 3: a key component of the SNOMED CT development process
A Y Wang1, J W Barrett, T Bentley
1College of American Pathologists, Northfield, IL, USA.
Proceedings. AMIA Symposium
|February 5, 2002
Summary
Mapping SNOMED RT and Clinical Terms Version 3 (CTV3) found a 28% semantic overlap. This study details the process of merging these medical terminologies into SNOMED Clinical Terms (SNOMED CT).
Area of Science:
- Medical Informatics
- Terminology Management
Background:
- SNOMED RT and Clinical Terms Version 3 (CTV3) are extensive controlled medical terminologies.
- These terminologies are being merged to create SNOMED Clinical Terms (SNOMED CT).
Purpose of the Study:
- To map semantically equivalent and proximate concepts between SNOMED RT and CTV3.
- To identify concept overlap and evaluate synonymy within the source terminologies.
Main Methods:
- Utilized "same-as" and "is-a" relationships for mapping descriptions.
- Developed a methodology for cross-terminology concept mapping.
- Analyzed semantic equivalence and proximity between concepts.
Main Results:
- Approximately 28% semantic overlap was found between SNOMED RT and CTV3 descriptions.
- Identified semantically equivalent concepts and the closest "is-a" relationships for non-equivalent concepts.
- Evaluated the degree of synonymy present in the original terminologies.
Conclusions:
- The description mapping process provides a foundation for the SNOMED CT merge.
- Understanding semantic overlap is crucial for effective terminology integration.
- The findings highlight challenges and successes in merging large medical vocabularies.