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MINUTES-tcon
DICOM Working Group Eleven
(Display Function Standard)
Sept. 12, 2013
Members Present
Represented by
AIUM
Fujifilm Medical Systems
Philips Healthcare
Siemens Healthcare
Web 3D Consortium
Thomas Nelson
Paul Morgan
Joe Luszcz
Andreas Klingler
N. Polys
Members Absent
Voting Representative
*American College of Radiology
AAOMR
*CARS
*FDA
*Panasonic
Toshiba Visualization System NA
Alan Rowberg
Allan Farman
Heinz Lemke
Kish Chakrabarti
Florian Knicker
Jonathan Whitby
Other Member Representatives and Observers Present
Illmann, Joerg
Seeberger , Elmar
Vastagh, Stephen
Siemens Healthcare
Siemens Healthcare
MITA/NEMA
* Not counted toward quorum
Presiding Officers:
Joe Luszcz, Co-Chair
1. Opening
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The meeting was called to order at 10.00 USA Eastern Time. The Secretary reminded the participants
of the antitrust rules. The Agenda was approved.
2. Web3D Comments on Supplement 156
The Web3D Consortium promoted the original work item for the development of a DICOM MultiDimensional Presentation State standard and lent their guidance to the working group as the
requirements for this standard were developed. Now that there is a draft Supplement 156 for this
standard, Web3D has reviewed this work and offered comments on the draft.
The Wed 3D comments and J. Luszcz’s initial responses in were included and shown in
Sup156_20130620_1530_EndReviewSession2_Web3D_JML_Annotated.docx that was posted and presented.
Several points were raised and discussed, opening up heretofore closed issues. It was noted that Sup
156 does not intend to standardize identical presentations on all equipment. Rather, objects would
adapt to the style of the receiving / viewing system rather than appear identical to the creator system.
However, the various adaptation would all contain the same clinical information. This was discussed
at length. It was annotated to elicit public comments.
There was discussion on whether the scope chosen for presentation state objects in Sup 156 is the most
efficient to implement. N. Polys argued for example that implementations would commonly load the
volume data once and just transform the camera to different positions for related Saggital, Transverse,
and Coronal views. However, the current Sup 156 model would be to have simple objects wherein
each object represented a single view; thus for the current example three separate presentations state
objects in the same “spatial collection” would be used.
In summary the Chair stated that the current draft was a result of Group decisions and will be
considered the scope unless specific problems are discovered with the current approach..
HOMEWORK:
Since Spatial Collections was the concept identified to handle this case, members
were urged to generate examples of how Spatial Collections would be used, and
suggest which attributes would be held constant within presentation states in the
same Spatial Collection. With this example data, we hope to reconcile the
conflicting needs of simplicity of the object vs. efficiency of the implementation.
J. Luszcz thanked N. Polys for his detailed review.
3. Pipelines
Jonathan Whitby of Toshiba/Vital has proposed some processor pipeline models for our review. These
were posted to the FTP site *.png and *.vsd. Jonathan’s introductory message is also on the FTP site
pipelines.htm.
Due to insufficient time available, detailed discussion of the pipeline models was tabled to the next
meeting. However, several of the models were referenced during the discussion of Web3D comments.
4. Homework
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WG-11 (Display Function Standard) of
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Sept. 12, 2013
There were no questions on the homework assignments from the June face-to-face meeting in
Rosslyn.
5. Next Meetings
In Person
October 14-17 (Monday, 09.00 –Thursday-17.00)
MITA Conference Center,
1st Floor, 1300 N. 17th Street, Arlington, VA 22209
The Chair noted the importance of completing homework assignments prior to October 14th.
T-con
It was decide to hold another tcon on
September 30, 2013, Monday, 10.00-12.00 USA Eastern Time.
6. Adjournment
The t-con was adjourned 12:00 USA Eastern Time.
Submitted by:
Stephen Vastagh, Secretary
Reviewed by legal counsel: CRS 2013-09-13
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WG-11 (Display Function Standard) of
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Sept. 12, 2013