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MINUTES
DICOM Working Group Eleven
(Display Function Standard)
MITA Offices
Arlington, VA
Oct. 14-17, 2013
Members Present
Represented by
Fujifilm Medical Systems
Philips Healthcare
Siemens Healthcare
Toshiba Visualization System NA
Paul Morgan
Joe Luszcz
Andreas Klingler
Jonathan Whitby
Members Absent
Voting Representative
*American College of Radiology
AAOMR
*CARS
*FDA
*Panasonic
Web 3D Consortium
Alan Rowberg
Allan Farman
Heinz Lemke
Kish Chakrabarti
Florian Knicker
N. Polys
Other Member Representatives and Observers Present
Seeberger , Elmar
Vastagh, Stephen
Siemens Healthcare
MITA/NEMA
* Not counted toward quorum
Presiding Officers:
Joe Luszcz, Co-Chair
Paul Morgan, Co-Chair
1. Opening
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WG-11 (Display Function Standard) of
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Oct. 14-17, 2013
The meeting was called to order at 09.00 local time on Oct. 14. The Secretary reminded the
participants of the antitrust rules. The Agenda was approved. The main goal of this meeting was to
continue development of Supplement 156, Multi-Dimensional Presentation States {WI 2008-04-C}
and to present for second reading by WG-06 meeting concurrently this week.
The draft supplement has been revised throughout the meeting. The status of revisions at several
points in time during the meeting are posted in the meeting folder, e.g.
<Sup156_20131014_1730_EndDay1.docx>..
1.
Provide Solutions for Outstanding Major Items
There were a number of significant items from the June, 2013 meeting that need to be discussed and
possibly added to the existing Supplement 156 draft, including:
a. Blending
1. Confirm use cases
2. Need some blending - define process - How to combine non-volumetric input types
(original invention to be done)
3. Non-uniform resolution (e.g. CT and PET)
4. Describe blending of segmented data and non-segmented volume (JW)
b. Animating a cut plane through a rendered view – how, why
c. Opacity control points (describe opacity (purpose), alpha – opacity same thing?) Confirm the
concept, decide suitability
d. Clean up open-closed issue list
e. PS 3.4 ANNEX N
1. Decide about content – what needs to change, design pipeline and assign writing.
2. Distinction btw volume space and display space
3. Animation is optional – explain C11.x9.par.1
4. Clarify difference btw “application state and “presentation state”
5. Describe the rendering and MPR pipelines and provide diagrams – elaborate on transfer
functions – AFTERWARDS may be assigned
f. Combine cropping methods (with precedents??)
g. Add description of purpose of animation, add examples for animation
h. Do 2D View graphics have clinical context? Linkage to 3D Annotations?
i. Explicitly define 3D graphics annotation with optional link to clinical objects
j. Separate SOP Class for animation? (proposed by Siemens)
k. Pipelines
2.
Resolve Outstanding Minor Items
There were still a number of lesser items that need to be discussed and possibly revised in the existing
Supplement 156 draft, including:
1) Render View Geometry section on Frustum (proposed by Siemens 30 Sept 13 tcon)
2) Restoration of Presentation Spatial Collection (proposed by Philips)
3) Opacity LUT optional? (proposed by Philips)
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WG-11 (Display Function Standard) of
the DICOM Standards Committee.
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Oct. 14-17, 2013
3.
Complete Walkthrough of Supplement 156 Draft Prior to WG-6 Presentation
The group conducted a walkthrough of the Supplement 156 draft prior to WG-6 review sessions.
Removed all Microsoft Word Comments in the document, either by resolving the issue or by adding to
the Open Issues list. Concensus was reached on remaining Open Issues.
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WG-11 (Display Function Standard) of
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Oct. 14-17, 2013
4.
Outcome of the Presentation of the draft Supplement 156 to WG-06
The meeting discussions and review sessions with WG-6 produced the following changes to the draft
Supplement 156. Note that this is just a summary of major changes made during the meeting; the
Supplement document is the authoritative reference:

The supplement was renamed from “Multi-Dimensional Presentation State” to “Volumetric
Presentation State”

Unimplemented use cases were removed from the document

A flexible algorithm for blending and image fusion was added to the supplement. Palette Color
Lookup Tables were removed from the Volumetric Presentation State Relationship Module.

The use of volumetric and display annotations was refined

Definitions of volumetric presentation terms were added

The Volumetric Presentation State Reference Coordinate System was more precisely defined

Volumetric Annotation was made explicit within the Volumetric Presentation States instead of
being treated as inputs to the Volumetric Presentations State, captured in a new Volume Graphi
Annotation module. Spatial Fiducial and Structured Report objects that had provided
Volumetric Annotation were removed from the list of Presentation State inputs and instead
were made optional references to provide clinical context to the Volumetric Annotations.

Volume Cropping and Volumetric Annotation were added to the MPR IODs

Animation was defined more rigorously in terms of the relationships between parametric
attributes and animation behavior.

Constraints on Volumetric Presentation State inputs were refined to accommodate other
changes made in the document.

The role of Opacity Maps and Control Points was refined

Volume Rendering Geometry and Render Lighting modules were revised

Descriptions of the new Volumetric Presentation State IOD’s were integrated into PS 3.17
Annex N, including a Volumetric Pipeline analogous to the pipelines describing the existing
Presentation State objects.

Use of Key Object Selection Document to associate related Presentation State objects was
defined and a new Context Group for coded values defined

The draft supplement document was significantly restructured, sections renumbered, and
attribute tags defined.
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WG-11 (Display Function Standard) of
the DICOM Standards Committee.
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Oct. 14-17, 2013
5. Next Steps
All unresolved action items from the October meeting and review by WG-6 have been captured as
Comments in the Sup156_20131206_1000.docx version of the supplement which may be found in the
ftp://medical.nema.org/MEDICAL/Private/DICOM/workgrps/Wg11/Multi-Dimensional-Presentation-State/Supplement/
The Chair will assign items to members to address – these are noted by the initials of the member in
[brackets] at the end of each comment. Members are asked to review these items and either plan on
addressing them prior to the January 8th meeting or let the working group know by email that another
member should be assigned that item.
6. Next Meeting
T-con November 14, 2013 at 9am-11am Eastern.
Ed. Note: rescheduled to December 12, 2013 at 9am-11am Eastern.
Next face-to-face meeting is concurrent with WG-06: Jan. 8-10, 2014
MITA HQ Conference Center
7. Adjournment
The meeting recessed at 17:30 on Oct. 14-16 and reconvened 8:30 the following days. The meeting
was adjourned 17:00 on Oct. 17.
Submitted by:
Stephen Vastagh
Reviewed by legal counsel: CRS
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WG-11 (Display Function Standard) of
the DICOM Standards Committee.
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Oct. 14-17, 2013