RadLex Radiology Terminology With Over 30,000 Standardized Terms

RadLex is a controlled terminology containing more than 30,000 terms for radiology practice, education, and research. It serves as a unified source to standardize indexing and retrieval of radiology information, unifying and supplementing other lexicons like SNOMED-CT, LOINC, and DICOM. The initiative also includes RadReport, a library of report templates to improve clinical reporting practices.

Use Cases

• Standardize radiology report indexing and retrieval using the controlled terminology of over 30,000 RadLex terms.
• Integrate RadLex terms with other medical lexicons like SNOMED-CT and LOINC to create unified health information systems.
• Utilize RadReport templates from the initiative to structure and improve the clarity of clinical radiology reports.
• Develop software for organizing and retrieving online image data using the common set of terms provided by RadLex.

Strengths

• Contains more than 30,000 standardized radiology terms, providing a large vocabulary for indexing.
• Unifies and supplements established medical standards including SNOMED-CT, LOINC, and DICOM.
• Maintained by the U.S. Department of Health & Human Services, indicating authoritative curation.

Limitations

• The core data is a terminology/ontology, not a tabular dataset with rows and columns for direct statistical analysis.
• No sample data or specific file structure (like CSV) is provided, only an HTML format which may require parsing.
• The resource focuses on terminology definition, so applications require integration with external clinical or imaging data.

Provenance

Source

U.S. Department of Health & Human Services via Data.gov.

Collection Method

Curated controlled terminology developed for radiology.

Freshness

Last updated on August 2, 2025.