NEMA, Suite 1847
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Tcon M I N U T E S
DICOM WORKING GROUP TWENTY-THREE
(Application Hosting)
June 28, 2005
Members Present:
Represented by:
Eastman Kodak
Mallinckrodt Institute of Radiology
Philips Medical Systems
Siemens Medical Solutions
Societe Francaise de Radiologie
Jim Doran
Lawrence Tarbox
Bas Revet
Anand Kumar
Bernard Gibaud
Absent:
Represented by:
Agfa Healthcare
Barco
Fujifilm Medical Systems USA
General Electric Healthcare
Mevis
Oracle
R2 Technology
Rob Horn
Pavlos Papagiorgiou
Paul Morgan
David Deaven
Jan-Martin Kuhnigk
Dongbai Guo
Julian Marshall
Others Present:
Affiliation:
Johnathan Nystroem
Howard Clark
Sectra
NEMA Staff
Presiding Officer:
Lawrence Tarbox, Chair
1.
Preliminary Events
The participants identified themselves and their employers.
WG-23 Chair Lawrence Tarbox reminded members that the homework assignment from the last
meeting was to provide an expanded assessment for each of the four different technologies that
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were selected as worthy of more detailed evaluation during the Group’s last Tcon. The selected
technologies were:




High Performance Interface – Rob Horn
Web Services – Bernard Gibaud
Globus Toolkit/Grid – Lawrence Tarbox
.NET Architecture – Anand Kumar
For this meeting, the purpose was to review the written results produced in response to those
assignments.
2.
Discussion
The following technologies were reviewed in turn:
Technology
Web Services – Oral presentation only
Globus Toolkit/Grid – PowerPoint presentation
.NET Architecture – Oral presentation only
Discussion Leaders
Bernard Gibaud
Lawrence Tarbox
Anand Kumar
Anand Kumar suggested that agreement on what the interfaces should be, particularly for Phase
1, could help guide technology decisions. The members agreed that the desired functionality in
the interfaces impacts what technology could be used, but also that the technology selected for
describing and possibly implementing the interfaces impacts what kinds of functionality those
interfaces could have. The members decided that an iterative approach would be best. Now that
the working group has looked at a number of promising technologies, as well as failed
technologies to learn lessons from, it is time for the working group to focus on functional
descriptions of the interfaces. When the working group has a better idea of what capabilities the
interfaces need, they would then revisit the technology discussions.
Anand also brought member’s attention to the HL7 standards coming from the Clinical Context
Object Workgroup – also known as “CCOW.” The base interfaces in the CCOW standards are
described in a technology-neutral fashion, tied to smaller documents that described the coupling
of these interfaces to particular technologies. This led to a question regarding the kind of output
the DICOM working group will have. The members had previously discussed creating generic
descriptions of the interfaces, with potentially multiple language bindings. Anand suggested that
the pattern followed by CCOW might be one way to do that.
3.
Homework Assignments
Dr. Tarbox requested that members prepare their recommendations regarding the specific
interfaces that should be pursued in Phase I of this project. This will be the principal topic for
discussion at the group’s August 19 – 20, 2005 face-to-face meeting at NEMA. He also
reminded them that all written material related to that meeting should be posted to the
private ftp site at:
ftp://d9-workgrps:goimagego@medical.nema.org/medical/private/dicom/WORKGRPS/WG23/2005/2005-08-19.
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4.
Future Meetings
Members were reminded of the following dates and locations for future face-to-face meetings:
 August 19 – 20 at NEMA.
 November 7 – 8 following the WG-06 meeting.
5.
Adjournment
The meeting was adjourned at 11:45 AM.
Reported by:
Howard Clark, (Secretary)
July 11, 2005
Reviewed by counsel:
July 15, 2005
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