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Enabling Interoperability, Accessibility and
Reusability of Virtual Patients Findings from
the eViP project
Zary N, Hege I, Heid J, Kononowicz A, Woodham L,
Donkers J
www.virtualpatients.eu
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Aims of the presentation

• What eViP is about
• The goals of this sub-project
• How we achieved our goals
• Results
• Challenges
• Recommendations

eViP
www.virtualpatients.eu
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What is eViP about?

• eViP Project about electronic Virtual Patients
• 3 year (2007-2010) project, 9 partners and
  co-funded by the European Union
• Main outcome
• Create a bank of repurposed and enriched
  multilingual and multicultural virtual patients
  and share them

eViP
www.virtualpatients.eu
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The goals of the sub-project

• Development of the systematic method for
  exchanging virtual patient cases between VP
  systems
• eViP application profile
• Implementation of the eViP application profile by
  4 VP systems
• import/export of VPs

eViP
www.virtualpatients.eu
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Participating systems
Campus
Web-SP
OpenLabyrinth
CASUS
www.virtualpatients.eu
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Result eViP application profile

• The aim of application profiles is the selection
  and re-use of existing elements to tailor to the
  needs of a given group of users.
• MedBiquitous Virtual Patient 0.48
• MedBiquitous Healthcare Learning Object
  Metadata (Healthcare LOM)
• SCORM packages
• Conformance testing suite
• What does this mean???

eViP
www.virtualpatients.eu
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The same VP in different systems
www.virtualpatients.eu
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Challenge 1

• Importing a branched VP to linear VP system

Branched VP
Linear VP
Node
Node
Node
Node
Node
Node
Node
Node
Node
Node
Node
Node
Node
www.virtualpatients.eu
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Challenge 1 - Implications

• Has to be done manually

• Import all branches
• Put information about (best) next node(s), end
  nodes(s) and start node into imported VP

www.virtualpatients.eu
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Challenge 2

• Importing a linear VP to a branched VP system

Branched VP
Linear VP
Node
Node
Node
Node
Node
Node
Node
Node
Node
Node
Node
Node
Node
www.virtualpatients.eu
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Challenge 3

• Importing and exporting from "structured" to
  "unstructured"

"Structured" system
"Non-Structured" system
???
PhysicalExam
Text Element
Text Element
InterviewItem
Text Element
Diagnosis
Text Element
Therapy
www.virtualpatients.eu
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How the VP systems use different parts of the
specifications

• Differences
• Semi-linear systems use many specialized fields
• Linear systems use mostly text elements (VPDText)
• Branched systems use many Link and Rule elements
• Similarities
• All elements in DataAvailabilityModel (DAM) are
  used
• 3 of the 4 systems use XtensibleInfo
• Not used elements Conditional Rules, Counter,
  Timer, Specialized Body Locations

eViP
www.virtualpatients.eu
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Best practice guidelines

• Possibility to override exported content
• Conformance level testing
• Package validation
• XML/XSD validation
• Import validation
• Runtime validation
• External specifications handling
• XtensibleInfo
• e.g. IMS QTI, W3C Timed Text format
• Use same version of specification

automated by testing suites
manually in target system
www.virtualpatients.eu
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Thank you! Nabil Zary Nabil.Zary_at_ki.se More
information www.virtualpatients.eu
www.virtualpatients.eu