Curtis P. Langlotz, MD, PhD
Chair, RSNA RadLex Steering Committee
Associate Professor of Radiology
University of Pennsylva...
What is RadLex?
• A successor to the ACR Index for retrieving
online teaching files
• A set of terms for clinical reports ...
Medical Lexicons for Radiology
• UMLS (National Library of Medicine)
• SNOMED-CT (College of American Pathology)
• ACR Ind...
Medical Lexicons:
Completeness for Radiology
4%
9%
14%
9%
42%
71%
50%
50%
52%
87%
63%
63%
0%
25%
50%
75%
100%
ICD9 SNOMED ...
Shortcomings of Existing Medical
Terminologies for Imaging
• Image acquisition techniques
– MRI pulse sequences, CT parame...
Conclusion
There is a need for a single source ofThere is a need for a single source of
common terminology for radiology.c...
What is RadLex?
•26 participating organizations
•9 committees
•92 radiologist participants
•5,308 anatomic concepts (so fa...
RadLex Key Features
• Adopts existing concepts from widely
accepted standards (e.g., SNOMED, DICOM)
• Fills gaps where rad...
RadLex
Steering
Committee
RadLex MSK
Lexicon Development
Committee
Other RadLex
Lexicon Development
Committees
…
RadLex Te...
Key Collaborating Organizations
• American College of Radiology (ACR)
• College of American Pathologists /
Systematized No...
NCI Thesaurus
Iterative Lexicon
Development Process
SNOMED-
CT
RadLex Lexicon
Development
Committees
XMLRadLex
base
conten...
What is a RadLex Term?
• Unique numeric ID
• Name
• Narrative definition
• Source(s)
• Links to related terms/lexicons
• C...
RadLex Term Categories
1. Patient identifiers
2. Clinical history
3. Image acquisition,
processing, and display
4. Locatio...
Relationships in RadLex
• Part of (anatomy)
• Is a (pathology)
• Branch of (vessels, nerves)
• Contained in (body cavities...
Status of RadLex Project
• Anatomy meetings were held this fall
• Draft anatomic terms available for public
comment soon
•...
For More Information
• Visit the RadLex web site:
– http://www.rsna.org/radlex
• Attend a RadLex-related session at RSNA
–...
Questions for DICOM
• How to unify relationship with SNOMED?
• Best structure to work with RadLex? WG8?
Opening Screen
There are
12 RadLex
term categories
Enter a search term
BOOP Search
Hierarchy expands
to show results
in context
Term details are shown
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RSNARadLexDICOM2005.ppt

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RSNARadLexDICOM2005.ppt

  1. 1. Curtis P. Langlotz, MD, PhD Chair, RSNA RadLex Steering Committee Associate Professor of Radiology University of Pennsylvania RadLex: Unified Terminology for Radiology
  2. 2. What is RadLex? • A successor to the ACR Index for retrieving online teaching files • A set of terms for clinical reports in an electronic medical record • Common data elements to improve clinical imaging research
  3. 3. Medical Lexicons for Radiology • UMLS (National Library of Medicine) • SNOMED-CT (College of American Pathology) • ACR Index for Radiological Diagnoses (ACR) • NCI Thesaurus and Common Data Elements (CDEs) • Subspecialty lexicons: ACR BI-RADSTM , ASSR- intervertebral disks, Fleischner glossaries, ... • Coding schemes: ICD, CPT, LOINC
  4. 4. Medical Lexicons: Completeness for Radiology 4% 9% 14% 9% 42% 71% 50% 50% 52% 87% 63% 63% 0% 25% 50% 75% 100% ICD9 SNOMED UMLS  FSG: eDict:  LSVT: Mean Langlotz & Caldwell, J Digit Imaging 15(1S):201, 2002
  5. 5. Shortcomings of Existing Medical Terminologies for Imaging • Image acquisition techniques – MRI pulse sequences, CT parameters, imaging protocols • Image features – Low signal, high attenuation, hypoechoic • Global assessments – BI-RADS assessment categories • Anatomy only visible in context – Tendons, abdominal spaces
  6. 6. Conclusion There is a need for a single source ofThere is a need for a single source of common terminology for radiology.common terminology for radiology.
  7. 7. What is RadLex? •26 participating organizations •9 committees •92 radiologist participants •5,308 anatomic concepts (so far)
  8. 8. RadLex Key Features • Adopts existing concepts from widely accepted standards (e.g., SNOMED, DICOM) • Fills gaps where radiology terms are absent • Serves as single source for radiology concepts and terms • Linked to existing term sets (e.g. CPT, ACR Index, UMLS) • Freely available, courtesy of RSNA
  9. 9. RadLex Steering Committee RadLex MSK Lexicon Development Committee Other RadLex Lexicon Development Committees … RadLex Technical Task Force RSNA RadLex Staff Organizational Structure
  10. 10. Key Collaborating Organizations • American College of Radiology (ACR) • College of American Pathologists / Systematized Nomenclature for Medicine (CAP/SNOMED) • DICOM/IHE
  11. 11. NCI Thesaurus Iterative Lexicon Development Process SNOMED- CT RadLex Lexicon Development Committees XMLRadLex base content OWL OWL RadLex Protégé Database SNOMED- CT RadLex web site UMLS Meta- Thesaurus Lexicon Development Process
  12. 12. What is a RadLex Term? • Unique numeric ID • Name • Narrative definition • Source(s) • Links to related terms/lexicons • Comments • Sample image(s)
  13. 13. RadLex Term Categories 1. Patient identifiers 2. Clinical history 3. Image acquisition, processing, and display 4. Location on the image 5. Image quality 6. Anatomic location 7. Findings 8. Relationships 9. Uncertainty 10.Conclusions 11.Recommendations 12.Teaching attributes
  14. 14. Relationships in RadLex • Part of (anatomy) • Is a (pathology) • Branch of (vessels, nerves) • Contained in (body cavities and spaces) • Component of (assemblies, such as joints)
  15. 15. Status of RadLex Project • Anatomy meetings were held this fall • Draft anatomic terms available for public comment soon • Meetings winter/spring 2006 to consider findings and pathology terms • Public comment summer/fall 2006 • Release of RadLex 1.0 at RSNA 2006
  16. 16. For More Information • Visit the RadLex web site: – http://www.rsna.org/radlex • Attend a RadLex-related session at RSNA – See poster nearby • Visit the RadLex kiosk at InfoRad • Join our mailing list
  17. 17. Questions for DICOM • How to unify relationship with SNOMED? • Best structure to work with RadLex? WG8?
  18. 18. Opening Screen There are 12 RadLex term categories Enter a search term
  19. 19. BOOP Search Hierarchy expands to show results in context Term details are shown

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