Theodoros. N. Arvanitis, RT, DPhil, CEng, MIET, MIEEE ... · Codes version 2 to SNOMED CT. • The...
Transcript of Theodoros. N. Arvanitis, RT, DPhil, CEng, MIET, MIEEE ... · Codes version 2 to SNOMED CT. • The...
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TRANSFoRm
Theodoros. N. Arvanitis, RT, DPhil, CEng, MIET, MIEEE, AMIA, FRSM
Biomedical Informatics, Signals & Systems Research LaboratorySchool of Electronic, Electrical & Computer Engineering
College of Engineering and Physical SciencesUniversity of Birmingham
Birmingham Children’s Hospital NHS Foundation Trust
TRANSFoRm is partially funded by the European Commission - DG INFSO (FP7 247787)
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Specific research
knowledge
Actionable knowledge
Routinely collected
knowledge
Knowledge in healthcare
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• Clinical trials
• Controlled populations
• Well-defined questions
• EHR systems
• Wide coverage
• Vast quantity
• May lack in detail
and quality
• Distilled scientific
findings
• Usable in clinical
practice
• Decision support
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The challenge of representing knowledge in an interoperable computable form
• Developing a user understandable, computable and extensible knowledge representation scheme for capturing clinical trials’ concepts and information (knowledge)
– with a multilingual support
• The foundation of interoperability lies with a shared understanding of concepts and data representation between systems:
– it is necessary to establish both syntactic (model-based) and semantic interoperability to represent knowledge in a computable form
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Cohort identification as part Clinical trials life-cycle
Adapted from Source: Douglas Fridsma, MD, PhD
The University of Pittsburgh Cancer Institute Centre for Pathology and Oncology Informatics
Clinical Trials Research Core
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Query Formulation Workbench
• Provides tools necessary to author, store and deploy queries of clinical data toidentify subjects for clinical studies:
– query authoring for the identification of research subjects based on existingeHR data
– use of semantic mediator services
• Semantically aware
• Enables easy authoring of distributed searches to EHR and other clinical data sources
• Uses a controlled vocabulary service and appropriate standards-based technological solutions
• Automatically identifies ‘prevalent cases’ for research
– Count eligible subjects, flag the subjects for recruitment and consent by the local clinical care team
– Full compliance with data protection legislation and best practice
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Overall Design Approach
• The development of the system adopts a model-based approach, where the TRANSFoRm Clinical Research Information Model (CRIM) provides a computable information model for eligibility criteria.
• Criteria concepts, especially clinical concepts, can be browsed and selected through the TRANSFoRm Integrated Vocabulary Service.
– The vocabulary service provides mappings from standard UMLS concepts to standard EHR or clinical data sources’ coding schemes.
• The eligibility criteria are captured in a computable representation, based on the Clinical Data Integration Model (CDIM) ontology
– CDIM captures an extensible common representation of clinical care data
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Conceptual Architecture
Clinical Researcher
Vocabulary
Service
(1) C
linica
l Codes
(2) Search Criteria EHR
DS
(3) Local Query
(4) Query Result(5) Query Result
TRANSFoRm Query
Formulation Workbench
CDIM-DSM
mappingCDIM Ontology
Provenance Service
Distributed Infrastructure
for Data Extraction and
Linkage
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Vocabulary Service: RCD v2/ICPC2
• Read Codes (RCDv2) and International
Classification of Primary Care (ICPC2)
corpus of terms and their associated
mappings
– created to cater for the initial need of
the existence of specific primary care
oriented terminologies.
• The UK NHS Connecting for Health
Terminology Centre - mappings from Read
Codes version 2 to SNOMED CT.
• The Read Codes v2 database in
Transform VS is set up based on this
mapping so that Read Codes 2 concepts
can be linked to a UMLS search. Similar
approach for ICPC2.
• ICPC2-ICD10 Thesaurus and mappings -
Transition Project @ University of
Amsterdam
• The TRANSFoRm team is updating the
ICPC-ICD 10 mapping and Thesaurus
UMLS
Metathesaurus
Read Codes v2
Codes
SNOMED CT
Codes
ICPC2
Codes
ICD-10
Thesaurus/Codes
UMLS
Metathesaurus
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Demo of the Vocabulary Service
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Demo of Eligibility Criteria Creation
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Submitting Queries
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Identifying prevalent
cases through eligible counts
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Dr Theodoros N. Arvanitis
University of BirminghamBirmingham Children’s Hospital NHS Trust
University of Birmingham Clinical Informatics Research Team: Sarah Lim Choi Keung, James Rossiter, Lei Zhao
TRANSFoRm