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MINUTES- tcon
DICOM WG-27
(Web Technology for DICOM)
July 16, 2013
Members Present
Represented by
ACR/Johns Hopkins University
Agfa HealthCare
Harris Healthcare Solutions
James Philbin
Brad Genereaux
Timothy Culp
Merge Healthcare
William Lingley
Newport Instruments
Robert Leif
Toshiba Med. Research Institute, USA Kevin O’Donnell
Members Absent
Voting Representative
Compressus
GE Healthcare
Mallincrodt Institute of Radiology
Medical Connections, Ltd
Philips Healthcare
Siemens AG – Healthcare Sector
Laszlo Gasztonyi
Chris Lindop
Lawrence Tarbox
David Harvey
Chris Melo
Nikolaus Wirsz
Alternate Representatives, Observers and Others Present:
Atanasiu, Razvan
Feng, Wenzheng
Horn, Robert
Acuo Technologies
NY Presbyterian Hospital
Agfa Healthcare
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DICOM Working Group Twenty-seven
July 16, 2013
Vastagh, Stephen
Presiding Officers:
MITA Secretary
James Philbin, Co-Chair
1. Opening
The t-con was called to order at 10:30 USA Eastern Time. The Secretary called the roll. The Agenda
was approved. The minutes of the June 11 WG-27 t-con and subsequent Joint WG-20/WG-27 t-con
were approved. S. Vastagh reviewed the antitrust rules for the meeting.
2. Co-Chair election: results, next steps.
S. Vastagh reported that the votes resulted in a tie. There will be a 30 day re-ballot issued.
3. Review WG-06 June meeting results
a. STOW-RS (Final Text) Was approved for Letter Ballot, Votes due Aug. 6th
b. QIDO-RS (Public Comment) Was approved for Public Comment, Comments due
Aug 4th
A t-con was set up for Aug 7, Wednesday, 10.30-12.30 USA Eastern Time to review comments;
Brad noted that he is submitting comments shortly on STOW, QIDO, and WADO. Will post in
today’s meeting notes as well as submit formally.
4. CP for Inline Binary (OB, OW, UN) in XML: Tim Culp
The CP was drafted by T. Culp and posted in the meeting folder with the following rationale:
“Rationale for Correction:
Supplement 161 does not define how inline binary contents (DicomAttributes OB, OW, UN)
should be packed. Bulk data is used for large binary attributes, but short DicomAttributes OB,
OW, UN, should be inline and encoded as xs:base64Binary.
Part 19 currently defines a DicomAttribute Value as an xs:positiveInteger. Recommend that
this be changed to xs:any so it can be an integer, string, or encoded binary value.”
After detailed discussion it was decided that T. Culp will recirculate a revised draft. The aim is to
submit to WG-06 in August.
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DICOM Working Group Twenty-seven
July 16, 2013
5. Review of Joint WG-20 WG-27 June 26 meeting on FHIR: J. Philbin, Brad G.
ImagingStudy Resource
Jim reported on WG-20/WG-27 Joint meeting on June 26.
ACTION: Jim will look for H. Solomon notes to be transmitted to HL7 FHIR.
Next joint t-con is scheduled for July 24. In person meeting probably on Thursday
Sept. 26 at HL7 in Cambridge.
[Sept, 22-27, 2013 – 27th
HL7 Annual Plenary and Working Group Meetings
Hyatt Regency, Cambridge, MA]
6. Proposed Work Item for RESTful Interface for UPS
Rob Horn informed of a suggestion that a restful interface for the UPS functionality would be useful.
UPS is a normalized, not composite service, it is a dynamic resource that is changing. It is doable, it
would simplify things. The Work Item would be similar to STOW and QIDO. Reuse XML mapping
for object data types. Issues expected in e.g. state management, error management.
Following the above introduction K. O’Donnell arrived and presented and described the draft Work
Item: RESTful UPS. R. Horn posed the question about including the mechanisms in the Work Item
and noted to emphasize that this is not a new “invention”.
J. Philbin noted that there is a Work Item approved for NADO and suggested to harmonize to use the
same underlining mechanism although the purposes are different.
Use cases: post processing, viewing and reporting are likely to tbe the three main use cases.
This draft will be posted to today’s meeting folder and will be submitted to DSC.
7. Additional Potential New CPs
7.1
CP for Server Info modeled on info model from DICOM Part 15 Annex H
J. Philbin asked for volunteers:
J. Whitby will be asked to lead, Jim and Brad to participate
Jim will set up discussion.
7.2
Improved mapping between DICOM XML and JSON
This was an old agenda item. DICOM does not now specify mapping. There is a reference in
the QIDO supplement but no mapping for the other new Supplements.
J. Philbin asked for volunteers:
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DICOM Working Group Twenty-seven
July 16, 2013
Brad , Jim , Wenzheng, Jonathan will participate. Leader to be selected at first
meeting.
Jim will set up discussion.
7.3
Unify Error and Warning messages for WADO, STOW and QIDO
J. Philbin asked for volunteers:
Brad , Jim , Tim Culp, Wenzheng, Jonathan will participate.
Leader to be selected at first discussion.
Jim will set up discussion.
7.4
Refactored Meta data with de-duplication -- XML & JSON
Brad , Jim , Tim Culp, Wenzheng, Jonathan will participate.
Brad will lead.
Jim will set up discussion.
8. Other old business
None
9. New business
None
10. Next meetings
T-Cons
2013-08-07, Wed., 10.30-12.30 USA Eastern Time
2013-09-10, Tue., 11.30-13.30 USA Eastern Time
In-Person
To Be Confirmed –Thursday, 2013-09-26, Cambridge MA, @ HL7 meetings
To Be Confirmed –
Tuesday, 2013-12-03, 10.30-17.00 Chicago time,
McCormick Place @ RSNA
11. Adjournment
The meeting was adjourned at 12.30
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DICOM Working Group Twenty-seven
July 16, 2013
Submitted by:
Stephen Vastagh, Secretary
Reviewed by Legal Counsel: CRS 2013-07-16
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DICOM Working Group Twenty-seven
July 16, 2013