Joint ITI/WG 26 DICOM Webservices Review and Discussion

Attendees

Questions for IT Infra for performance of retrieve of large binary objects (image sets)

Image studies are treated differently than other document sets in that they are not submitted to a repository; a Key Object Selection document is submitted

Rad Tech has redrafted XDS.b to use the MTOM/XOP retrieve transactions for image sets, which will be treated as document sets
Questions for WG27 about security of WADO transactions: WG27 does not intend to address security of WADO, but to define Web Services transactions to replace it

WADO retrieve uses a simpler transaction than the Web Services MTOM/XOP retrieve defined in XDS.b; is it possible to have a secure retrieve that allows for transformation of the data payload to jpg (as in WADO)?
XCA: defines method for sharing across "communities" (affinity domains or other); requires that you need patient ID at site
XCA can retrieve document set with transaction identical to the one in XDS.b
XCA requires Home Community ID (which should already be provided in manifest)
Focus on risk analysis: Is it necessary to authenticate individuals across sites? Is a request from a trusted node sufficient?

Need capability to filter returns on patient, study type, date, etc
Domain needs to organize its information in a particular way
Is it possible to use Document Set as a proxy for Study (or series)
XDS Queries can be limited by format code/type: manifest as a document type that should show up in query responses; thus query results could list only manifests and not individual images

Next Call: Friday, Feb. 13, 10:30am-12:00pm

Radiology Technical Committee