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Model-Driven Health Tools
Open Health Tools Board Meeting
MDHT Architecture
• Design-Time Tooling (built on Eclipse platform)
 Model editor - user interface for creating models
 Model transformations – used to convert models to artifacts
 Model-to-model (e.g. CDA domain template model -> CDA Ecore
model)
 Model-to-text (e.g. CDA domain template model -> DITA)
• Generated Artifacts
 Documentation (e.g. implementation guide)
 Runtime APIs (e.g. Java APIs for Consolidated CDA)
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MDHT Architecture
MDHT Design-Time
Tooling
Models
CDA
UML
Generate
Reference
Implementation
Java
APIs
Generate
Documentation CDA IGs
Create / Edit
Model Editor
HL7 CDA
Existing Models
XSDs,
R-MIM
Import
Model
Transformations
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MDHT Workflow
Web Content
Publication
Online
Help
Business
Analyst
CDA
Model
Implementation
Guide
Designer
MDHT
Software
Developer
Documentation
HL7 CDA Best Practices
Requirements
Java API
CDA
Runtime
Application
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Developer
CDA
Web-Based
Validation
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Project Highlights
• MDHT Models
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September 2012
HL7 Consolidated (Meaningful Use Stage 2)
HITSP/IHE/CCD (Meaningful Use Stage 1)
Public Health Case Reporting (PHCR)
Vital Statistics Reporting
Subject Study Data
EMS PCR
Personal Healthcare Monitoring Report (PHMR)
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Project Highlights
• 1.1 release (May)
• ONC blog posts and survey
• Increasing adoption by federal agencies and private
sector efforts
• Over 100 registered project members
• Planning for 1.2 release
• Plan for catering to business analysts (lightweight allin-one distribution)
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Project Highlights
• New subprojects in MDHT
 Model-Driven Message Interoperability (MDMI)
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OMG standard for model-based mapping / transformation
Initial codebase donated by FireStar software
MDMI map editor, transformation runtime
Generate partial or full MDMI maps from MDHT models
 Archetype Modeling Language (AML)
 Work coming out of Clinical Information Modeling Initiative (CIMI)
 OMG proposal AML profile for UML
 Reference implementation in MDHT
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Technical Highlights
• Generalized MDHT Infrastructure
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Pluggable model transformation framework
Pluggable validation framework
Flexible XML Resource loading
Extensible instance initialization framework
Future Targeted Environments
 Archetypes
 HL7 V3 Clinical Statements
 HL7 Structured Documents (non-CDA)
• Expanded Publishing (DITA) support
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Technical Highlights
• MDHT Model Validation Enhancements
 Design-time model validation framework
 Runtime JUnit test generation
 Consolidated CDA has over 2800 JUnit tests (each test case
corresponds to one or more C-CDA conformance rules)
• MDHT Runtime Validation Capabilities
 Enhanced Validation API
 Eclipse XML Editor Extensions
 Web-based validation application
September 2012
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