CDA Reference in DICOM - PowerPoint PPT Presentation

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CDA Reference in DICOM

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Use case: Provide access to relevant CDA documents to a DICOM-based application, ... Rejoinder: The service does not necessarily need to be a DICOM Service ... – PowerPoint PPT presentation

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Title: CDA Reference in DICOM


1
CDA Reference in DICOM
  • WG20 Discussion
  • 19-21 January 2004

2
TheWork Item
  • CDA OID reference in DICOM
  • Use case Provide access to relevant CDA
    documents to a DICOM-based application, such as
    pre-imaging-procedure lab test results, or
    patient advance medical directives, or an
    outpatient history and physical report.
  • Work Item Define common method of referencing
    CDA documents in DICOM instances, including such
    new attributes in various objects as required to
    support CDA documents in the DICOM-based
    workflows.

3
Use Locations
  • Modality Worklist
  • General Purpose Worklist
  • Relevant Information Sequence
  • C.17-3 Macro
  • Structured Report
  • Pertinent Other Evidence Sequence
  • C.17-3 Macro
  • Composite Object Reference Macro
  • SOP Class / Instance
  • DICOMDIR
  • SOP Class / Instance, File ID (name)

4
C.17-3 Macro
  • Study / Series / SOP Class / Instance
  • Retrieve AE Tile (per Series)
  • Not appropriate for non-hierachical objects, or
    not collected in DICOM acquisition context
  • Hanging Protocol objects
  • Registration (Atlas) Frame of Reference
  • Advance medical directives (CDA)
  • Nursing notes (CDA)

5
What do we need beyond a bare UID?
  • Identification of object type
  • MIME type / sub-type
  • Identification of access service
  • URI Scheme FTP, HTTP,
  • Identification of access point
  • URI Authority
  • Identification of access string
  • URI Path or Query
  • May replicate OID if that is part of the access
    string?
  • Cf. HL7v2 RP, HL7v3 ED data types

SOP Class
implicit C-MOVE
AE Title
Study/Series hierarchy
6
Question Do we want a CDA SOP Class?
  • Pro Allows us to treat CDA documents in a DICOM
    context like other DICOM objects
  • E.g., in SR COMPOSITE Content Item
  • Con Implies definition of a Service that will be
    used to operate on CDA documents
  • Rejoinder The service does not necessarily need
    to be a DICOM Service
  • Comparable question wrt/ Registration FoR

7
Options
  • Bare UID
  • SOP Class / Instance UIDs
  • UID with access attributes
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