A schema for representing medical language applied to clinical radiology. Academic Article uri icon



  • Decision Support Systems, Management
  • Evaluation Studies as Topic
  • Subject Headings

MeSH Major

  • Natural Language Processing
  • Radiology
  • Terminology as Topic


  • Develop a representational schema for clinical concepts and apply it to the task of encoding radiology reports of the chest. The schema was developed following a manual analysis of sample reports from the domain. The schema has two main components: the Medical Entities Dictionary (MED), which specifies the formal representation of the concepts in the domain and of their structures, and the natural-language processor, which specifies the linguistic expressions of the concepts. The schema was evaluated by applying it to a test set of 7,500 reports. Two-hundred reports from the test set were manually analyzed by a medical expert to determine the accuracy and success rate of the system. 82% of the 7,500 reports that contained relevant clinical information were successfully structured automatically. For the smaller set of 200 reports, 80% were structured successfully with an accuracy rate of 97%. The schema is a formal representation for clinical concepts in radiology reports, and provides domain coverage that is particularly well-suited for natural-language processing of radiology for use in a decision support system.

publication date

  • June 1994
  • May 1994

has subject area

  • Decision Support Systems, Management
  • Evaluation Studies as Topic
  • Natural Language Processing
  • Radiology
  • Subject Headings
  • Terminology as Topic



  • Journal Article



  • eng

PubMed Central ID

  • PMC116202

PubMed ID

  • 7719806

Additional Document Info

start page

  • 233

end page

  • 248


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