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IHE Distributing Images: Cross-enterprise Document Sharing for Imaging (XDS-I)

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Chris Lindop, IHE Radiology Planning Co-chair

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IHE Distributing Images: Cross-enterprise Document Sharing for Imaging (XDS-I)

  1. 1. Distributing Images: Cross-enterprise Document Sharing for Imaging (XDS-I) Chris Lindop
  2. 2. <ul><li>Sharing of Imaging Information across health enterprises </li></ul><ul><li>Imaging Information includes </li></ul><ul><ul><li>extensive sets of DICOM instances including images, evidence documents and presentation states </li></ul></ul><ul><ul><li>diagnostic reports provided in a &quot;for display&quot; form </li></ul></ul><ul><ul><li>selection of diagnostically significant images associated with the report content </li></ul></ul>Abstract / Scope
  3. 3. Sharing Radiology Reports and Images in a Regional Health Information Network Radiology Enterprise A Radiology Enterprise B Physician Office Regional Health Information Network PACS B PACS A Radiology-to-radiology Radiology-to- Physicians
  4. 4. Sharing Radiology Reports and Images in a Regional Health Information Network Radiology Enterprise A Radiology Enterprise B Physician Office Regional Health Information Network Cross-Enterprise Registry <ul><li>Patient Id= 3547F45 </li></ul><ul><li>Report 5/21/1998 : CT Head  B </li></ul><ul><li>Study 5/21/1998 : CT Head  B </li></ul><ul><li>Report 2/18/2005 : Chest Xray  A </li></ul><ul><li>Study 2/18/2005 : Chest Xray  A </li></ul>PACS B PACS A
  5. 5. Physicians and Systems within a Regional Health Network - Routine Imaging Referral Radiology Enterprise A Radiology Enterprise B Physician Office Regional Health Information Network Cross-Enterprise Registry <ul><li>Patient Id= 3547F45 </li></ul><ul><li>Report 5/21/1998 : CT Head  B </li></ul><ul><li>Study 5/21/1998 : CT Head  B </li></ul>Query for Documents Register Imaging Information for sharing Prior imaging Reports & Studies Register Imaging Information for sharing
  6. 6. Physicians and Systems within a Regional Health Network - Routine Imaging Referral Radiology Enterprise A Radiology Enterprise B Physician Office Regional Health Information Network Cross-Enterprise Registry Register Imaging Information for sharing Notification of Doc Availability Register Imaging Information for sharing
  7. 7. Physicians and Systems within a Regional Health Network for a Routine Imaging Referral Radiology Enterprise A Radiology Enterprise B Physician Office Regional Health Information Network Cross-Enterprise Registry <ul><li>Patient Id= 3547F45 </li></ul><ul><li>Report 5/21/1998 : CT Head  B </li></ul><ul><li>Study 5/21/1998 : CT Head  B </li></ul><ul><li>Report 2/18/2005 : Chest Xray  A </li></ul><ul><li>Study 2/18/2005 : Chest Xray  A </li></ul>Prior Imaging Report & Study Query for documents Imaging Report & Study Notification of Doc Availability
  8. 8. Value proposition <ul><li>Imaging component of the Electronic Health Record: Shared imaging Record, in a community, region, etc. </li></ul><ul><li>Effective means to contribute and access imaging documents across health enterprises. </li></ul><ul><ul><li>Without XDS-I, access to the radiology report across health enterprises is difficult </li></ul></ul><ul><li>Scalable sharing of imaging documents between radiology departments, private physicians, clinics, long term care, acute care with different clinical IT systems. </li></ul><ul><li>Easy access: Care providers are offered means to query and retrieve imaging documents (images and reports) of interest </li></ul><ul><ul><li>with the same mechanisms used to query other documents </li></ul></ul>
  9. 9. Value proposition <ul><li>Distributed: Each Care delivery organization “publishes” imaging information for others. Actual images remain in the source/Image Manager. </li></ul><ul><li>Cross-Enterprise: A Registry provides an index for published information to authorized care delivery organizations belonging to the same clinical affinity domain. </li></ul><ul><li>Document Centric: Published clinical data is organized into “clinical documents”. using agreed standard document types (DICOM KOS, PDF and/or text report) </li></ul><ul><li>Document Content Neutral: Document content is processed only by source and consumer IT systems. </li></ul><ul><li>Standardized Registry Attributes: Queries based on meaningful attributes ensure deterministic document searches . </li></ul>
  10. 10. XDS-I Dependencies <ul><li>XDS-I depends on IT Infrastructure Cross-Enterprise Document Sharing (XDS) </li></ul><ul><li>New Actors </li></ul><ul><ul><li>Imaging Document Source </li></ul></ul><ul><ul><li>Imaging Document Consumer (should be grouped with Document Consumer) </li></ul></ul><ul><li>Same Actors as in XDS </li></ul><ul><ul><li>Document Consumer </li></ul></ul><ul><ul><li>Document Registry </li></ul></ul><ul><ul><li>Document Repository </li></ul></ul><ul><li>Added extension to support imaging data (images and reports) </li></ul>
  11. 11. Document Consumer Retrieve Document Query Documents Patient Identity Source Patient Identity Feed Imaging Document Source Document Registry Document Repository Provide & Register Document Set Register Document Set Imaging Document Consumer Retrieve Images Retrieve Presentation States Retrieve Key Image Note Retrieve Evidence Documents WADO Retrieve XDS-I Actors and Transactions
  12. 12. XDS-I New Transaction requirements <ul><li>XDS-I Actors: </li></ul><ul><ul><li>Imaging Document Consumer </li></ul></ul><ul><ul><ul><li>at least one Retrieve ( [RAD-55], [RAD-16], [RAD-17], [RAD-27], [RAD-31] [RAD-35]) </li></ul></ul></ul><ul><ul><li>Imaging Document Source </li></ul></ul><ul><ul><ul><li>Provide and Register Document Set [RAD-54] </li></ul></ul></ul><ul><ul><ul><li>WADO Retrieve [RAD-55] </li></ul></ul></ul><ul><ul><ul><li>Retrieve Images [RAD-16], Retrieve Presentation States [RAD-17] Retrieve Reports [RAD-27], Retrieve Key Image Note [RAD-31], Retrieve Evidence Documents [RAD-45] </li></ul></ul></ul><ul><li>XDS Actors </li></ul><ul><ul><li>Document Repository </li></ul></ul><ul><ul><ul><li>Provide and Register Document Set [RAD-54] </li></ul></ul></ul>
  13. 13. Options <ul><li>Imaging Document Source must support at least one of the following options: </li></ul><ul><ul><li>Extensive Set of DICOM Instances </li></ul></ul><ul><ul><li>PDF Report </li></ul></ul><ul><ul><li>NEW Text Report wrapped in a CDA Document </li></ul></ul><ul><ul><li>NO Text option </li></ul></ul><ul><ul><li>NO multipart Text / PDF option </li></ul></ul>
  14. 14. Sharing of Extensive DICOM Instance Set
  15. 15. Document Registry Document Repository Manifest Reference to image 1 DICOM Manifest Reference to image 2 Reference to image 3 Manifest Manifest Clinical Encounter Clinical IT System Query Registry Manifest Retrieve Manifest Reference to image 1 DICOM Manifest Reference to image 2 Reference to image 3 Retrieve Images Register Manifest Manifest
  16. 16. Sharing of Extensive DICOM Instance Set <ul><li>The shared Document is a manifest </li></ul><ul><ul><li>a Key Object Selection DICOM Instance </li></ul></ul><ul><ul><ul><li>title : manifest </li></ul></ul></ul><ul><li>Imaging Document Source is required </li></ul><ul><ul><li>to ensure that the referenced images from within a published manifest are available to be retrieved </li></ul></ul><ul><li>Imaging Document Source is responsible </li></ul><ul><ul><li>for replacing a previously submitted manifest Document when a change occurs to the manifest content (eg. Change of the DICOM SOP instances referenced within the manifest) </li></ul></ul>
  17. 17. Sharing of Imaging Report
  18. 18. Radiology system Report Source Text wrapped into CDA Report PDF Report … .. Findings: Header : Report Type: OB / Gyn BPD ... … .. Radiology Report Impressions : Gestational Age ...
  19. 19. Radiology system Report Source Document Registry Document Repository Report Report Clinical Encounter Clinical IT System Query Registry Retrieve Report Register Report Report … .. Findings : Header : Report Type: OB / Gyn BPD ... … .. Radiology Report Impressions : Gestational Age ...
  20. 20. Sharing of Reports <ul><li>The shared Report Document format is </li></ul><ul><ul><li>PDF, Text wrapped in a CDA </li></ul></ul><ul><li>A report can </li></ul><ul><ul><li>embed selected images in its PDF format </li></ul></ul><ul><ul><li>include fully resolved hyperlinks (interactively clickable) that point to the selected images </li></ul></ul><ul><li>Imaging Document Source is responsible </li></ul><ul><ul><li>for formatting the hyperlink to reference relevant images as a DICOM WADO URI or as IHE RID Request for Document </li></ul></ul><ul><li>Imaging Document Source is required </li></ul><ul><ul><li>to ensure that image references are valid links </li></ul></ul>
  21. 21. XDS-I Actors / Grouping <ul><li>No specific grouping requirement on Imaging Document Source, however: </li></ul><ul><ul><li>Imaging Document Source is responsible of ensuring published images in a manifest are available to be retrieved </li></ul></ul><ul><li>Imaging Document Consumer shall be grouped with a Document Consumer </li></ul>
  22. 22. Linking Report to Complete Set of Images Document Repository Document Registry Study Manifest Report Document Entry Document Entry Submission Set
  23. 23. Linking Report to Complete Set of Images Document Repository Document Registry Document Entry Submission Set 1 Report Document Entry Submission Set 2 Study Manifest
  24. 24. Linking Report to Prior Images and Prior Report Document Repository Document Registry Document Entry Submission Set 3 Prior Study Manifest Document Entry Submission Set 1 Prior Report Document Entry Submission Set 2 Report Document Entry Submission Set 4 Study Manifest
  25. 25. Linking Report to Selected Images Radiology system Report Source … .. Findings : Header : Report Type: OB / Gyn Radiology Report Relevant Image Gestational Age ... WADO URI Link to image BPD ... … ..
  26. 26. XDS-I Metadata <ul><li>Radiology specific </li></ul><ul><ul><li>Acquisition Modality (e.g. CT, MR) </li></ul></ul><ul><ul><li>Anatomic Region (e.g. Arm, Elbow, Hand) </li></ul></ul><ul><ul><li>Requested procedure (e.g. MRI Knee with contrast) </li></ul></ul><ul><li>Query example </li></ul><ul><ul><li>find all “ CT of the Head ” of patient John Doe for the last 2 years </li></ul></ul>

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