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MINUTES
DICOM Working Group 24
(Surgery)
Date:
Place:
December 3, 2014
McCormick Place,
Chicago, IL
@RSNA 2014
Attendees
ISCAS
Echo Pixel
New York Methodist Hospital
BrainLab
Presiding Officer:
Secretary
1.
Represented by
Heinz Lemke
Ronald Schilling
Leonard Berliner
Sven Flossmann
Leonard Berliner, User Co- Chair
Heinz Lemke, General Chair
Luiza Kowalczyk
Opening, Approval of Agenda, Approval of Minutes, Antitrust rules
Leonard Berliner, clinical chairman, called the meeting to order at 3:00 p.m. and
welcomed the attendees.
The Agenda was approved. The minutes of the previous WG24 meeting on June 27,
2014 in Japan were approved without Objections and Abstention.
Report on election of Producer Co-Chair
The industry Co-Chair and the secretary position is still vacant. However, the plan of
having the new industry co-chair and secretary is in 2015.
DICOM Working Group Twenty-four
December 3, 2014
Page 1
2. Reference Coordinate System
Leonard went over the presentation “Reference Coordinate System”. The presentation is
posted in the ftp folder of WG-24for the references.
Philips group will no longer create a document on how to use DICOM’s existing
definition of coordinate systems and apply it consistently to use-cases.
Philips will no longer draft a Correction Proposal via the Work Group mailing list. It will
not happen because the Philips folks were pulled out form DICOM and that means the
action item for Lenny.
During the presentation the following question was brought up: “Does the DICOM
Standard contain sufficiently robust and diverse material to support a Reference
Coordinate Standard for the Surgical setting, which goes beyond registration of two
images?” and the answer is yes. There is a need for correction proposal for clarification
which is an additional information text which does not change, but facilitates, the
interpretation of the Standard.
Another question was if the reference coordinate system should be based on the current
standards (IODs and SOPs) for display, based on Cartesian coordinates. Will handle:
• 1-D – Vectors
• 2-D – Images
• 3-D – Volumetric models
• 4-D – changes over time
• Will handle 2-D and 3-D imaging formats
• Will provide spatial orientation and scale
A draft of a Correction Proposal (Clarification) will be presented in the appropriate
format and terminology at the WG24 meeting in Barcelona of June 2015. It will be sent
out for review by WG24 Committee members
After review, revision and acceptance by WG 24, will be submitted to WG6 for review
3. Angiography Video
Existing DICOM Standards for Video
A number of DICOM Supplements have been developed by Working Group 13 (Visible
Light) that can provide the necessary DICOM documents to provide for video formats.
Supplement 42: MPEG2 Transfer Syntax
Supplement 47: Visible Light Video
Supplement 137: MPEG2 MP@HL Transfer Syntax
Supplement 149: MPEG-4 AVC/H.264 Transfer Syntax
Supplement 180: MPEG-4 AVC/H.264 Transfer Syntax
DICOM Working Group Twenty-four
December 3, 2014
Page 2
Review of the DICOM standards shows that standards are well defined for MPEG2 and
MPEG4. Whether or not video is used for angiography is a clinical and commercial
decision. The DICOM standards are adequate.
4. Development of a new IOD for the results of “Fibertracking” – Sven’s presentation
(Supplement for a discussion during the WG-06 meeting in January 12-16, 2015)
5. Action Items



Draft a white paper on IHE surgery group.
Introduce IHE group to WG-24, and see if these two groups can have a meeting
together.
Election Industry Co-Chair and Secretary
6. Next meetings
The next WG-24 meeting will take place at CARS in Barcelona (June 24th-27th, 2015)
7. Adjournment
The meeting was adjourned, at 4:40 pm CT
Reported by
Luiza Kowalczyk, Secretary
Reviewed by legal counsel:
Clark Silcox
DICOM Working Group Twenty-four
December 3, 2014
Page 3