NEMA, Suite 1752
1300 North 17th Street
Rosslyn, VA 22209
Ph: (703) 841-3285
HTTP://DICOM.NEMA.ORG
MINUTES
DICOM WORKING GROUP SIX
(Base Standard)
January 22 – 26, 2007
(Includes Results from Tcon of January 16, 2007)
Rosslyn, VA
Members Present:
Represented by:
Agfa Healthcare
Dynamic Imaging
Eastman Kodak
GE Healthcare
Merge eMed
Otech
Philips Medical Systems
RadPharm
Toshiba Medical Systems
Robert Horn – 1, 2, 3, 4, 5
Andrei Leontiev – 2, 3, 4, 5
Ellie Avraham – 1, 2, 3, 4, 5
Harry Solomon – 1, 2, 3, 4, 5
Steve Wranovsky – 1, 2, 3, 4, 5
Herman Oosterwijk – 2, 3
Bas Revet – 1, 2, 3, 4, 5
David Clunie – 1, 2
Kevin O’Donnell – 1, 2, 3
Members Absent:
Voting Representative:
DeJarnette Research Systems
Konica Minolta Medical Imaging
Siemens Medical Solutions
Societe Francaise de Radiologie
Charles Stockham
Jeff Anders
TBD
Joel Chabriais
* = Does not count toward a quorum
Others Present:
Affiliated with:
Johann Bauer – 1, 2, 3
Bruce Beckwith – 1, 2, 3
Christel Daniel-Le Bozec – 1, 2, 3
Ole Eichhorn – 1, 2,
Marcial Garcia-Rojo – 1, 2, 3
John Gilbertson – 1, 2, 3
David Harvey – 1, 2
Carl Zeiss, Germany
College of American Pathologists
Adicap-APHP-Inserm
Aperio Technologies
Hospital General de Ciudad Real
Case Western Univ.
Medical Connections – 1, 2
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007
1008
Bernard Hassold – 4, 5
Christopher Higgins – 1, 2
Mark Horton – 2, 3, 5
Jacques Klossa – 1, 2,
Marie-José Lacroix – 1, 2, 3, 4, 5
Joe Luszcz – 4, 5
Takashi Okuno – 1, 2, 3
Justin Pedro – 2, 3
Michael Schmidt – 5
Rainer Thieme – 1, 2, 3
Victor Varga – 1, 2, 3
Linda Wedemeyer – 2, 5
Dirk Weseloh – 1, 2, 3
Yukako Yagi – 2
Howard Clark – 1, 2, 3, 4, 5
Siemens Medical Solutions
Olympus America
Indian Health Service
Tribvn
GE Healthcare
Philips Medical Systems
Olympus, Tokoyo
Ophthalmic Technologies
Medflow
Siemens Medical Solutions
3DHISTECH
Veterans Health Administration
Carl Zeiss, Germany
NEMA Staff
(1 = Monday, 2 = Tuesday, 3 = Wednesday, 4 = Thursday, 5 = Friday; P = Phone)
Presiding Officer:
1.
Rob Horn, Chair
Preliminary Events
Members identified themselves and their employers. The secretary reported that a quorum was
present.
Members approved the agenda as presented (version 2).
Members reviewed the minutes from the WG-06 meeting held at NEMA Headquarters from
October 23 – 26, 2006. They noted that Item 5 incorrectly indicates that CP473 continues assigned
to Harry Solomon. In fact, it was cancelled during an earlier meeting, because its content had been
included in Supplement 122, which was, then, under development. Also, the spelling of Scot
Hogan’s name was corrected. With these corrections incorporated, members voted unanimously
to approve the minutes as amended.
Minutes of the November1 and November 3 teleconferences were approved as presented.
2.
NEMA Staff Report
Committee Secretary Howard Clark reported that three ballots were distributed following the
October 2006 meeting of WG-06. The results of these ballots are presented below:
BALLOT
Correction
Pack 39
Sup107
Sup114
Sup116
APPROVE
(22) for all
except 
22
26
24
DISAPPROVE
(1)663, (1)692
ABSTAIN
(3) for all
(1)617, (1)683, (1)688, (1)689, (4)692
0
0
0
4
1
1
6
3
2
1009
COMMENTS
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007
3.
Ballot Package from October 2006
Ballot Package #39 was approved for letter ballot in October of 2006. As noted above, 22
members of the DICOM Standards Committee voted to approve all Change Items in this
package. Three members abstained. Two CPs received one negative ballot each. Comments
were submitted for those CPs marked with an asterisks (*) in the list shown below. Each of
these comments was carefully considered, and minor, editorial changes were made in response to
them. With two abstentions (Kodak and Siemens), the correction proposals listed below were
approved for Final Text:













*CP617 – Support for Patient Positioner Pitch and Roll Angles
*CP668 (Use Transverse Not Axial for Cross-Sectional Images)
CP679 – Corrections and Additions to CT/MR Cardiovascular SR
CP682 – Align Description Annotation Attribute Enh. XA/XRF
*CP683 – Dimension Label incorrect place in Table C.7.6.17-1
CP684 – Archive Flag for MPPS
CP685 – Consistent Defined Term for Elliptical Coverage of k-Space
CP686 – Remove Existing References to Media Interchange Option
*CP688 – Specify Sequence Contents for DICOMDIR Records
*CP689 – Additional Terms for CID 4033
CP690 – Define Number of Items in Metabolite Map Code Sequence
CP691 – Clarify Additional Command Elements
*CP692 – Add Pixel Padding Value Range Limit Attribute
The following Change Items were approved in previous DICOM Standards Committee ballots:



CP622 – Additional Isotopes and Radiopharmaceuticals for NM
CP623 – Additional Isotopes and Radiopharmaceuticals for PET
CP637 – Additions to Anatomical Terms for Grouped Body Parts
However, they required SNOMED codes that could not be assigned immediately. Therefore,
they cannot, yet, be designated as Final Text
4.
Voting Package for January 2007
During the October 2006 meeting, members of WG-06 placed the following correction proposals
in the Voting Pack for January. During this meeting, after careful review and some slight
modifications, members voted unanimously to include them in a Letter Ballot to be designated
Ballot Package 40 for distribution early in February.








CP693 – Border Density Correction
CP694 – Wrong References in PS 3.17 Annex J
CP695 – Respiratory Interval Time Type Is Wrong
CP696 – Undefined Query Keys on Study Level C-FIND / G-GET
CP697 – Frame Increment Pointer for Single-Frame Images
CP698 – Image Type VM Should Be Two Or More
CP700 – Rename SOP Instance Reference Macros That Have Different Content
CP701 – Person Identification Macro Conditions
1010
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007



















CP702 – Author Observer Sequence Multiplicity
CP703 – Include Series Description, Date, Time in SR IODs
CP704 – Use Request Attributes Macro and Add Performed Procedure Step Summary
Macro
CP706 – Specify Number of Sequence Items When Missing
CP707 – Retire Group Lengths
CP708 – Remove Patient/Study Only from Conformance Example
CP710 – Make Specimen Identification Conditional for Microscopy
CP711 – Editorial Change for Figure in C.7.2.1
CP712 – Update Reference for CID 3717
CP713 – Add Bone Densitometry Modality Code
CP714 – Clarify DT Value Representation
CP715 – Add Service Episode ID
CP716 – Stereometric Relationship Series Information Missing
CP717 – RT Clarification of Compensator Rows and Columns
CP718 – Correction of Description of Tag (300A,00F7) in RT ION Beam Module
CP719 – Leaf Jaw Positions
CP720 – RT Typo in Tag for Compensator Type
CP721 – Addition of General Accessory Sequence to RT Plan
CP723 – Internationalize Special Needs Description
CP699 (PS2 Compression Data Elements Reused for Calibration), which originally was placed
in the voting packet for this meeting was held for further discussion in March.
During a previous meeting, consideration of CP650 (Add Pediatric Patient Size to Patient
Demographics Module) was deferred pending the availability of codes from SNOMED.
5.
Previously Assigned Change Proposals
Members reviewed the following assigned correction proposals and, after some modifications,
agreed to include them in the WG-06 Voting Packet for March 2007:














699 – PS2 Compression Data Elements Reused for Calibration
724 – Add Terms to Calculated Value & Methods CIDs
726 – Leading Spaces in PN VR Components
727 – Correct Duplicate Responsible Organization Definition
728 – Add Cardiology Report Titles to CID 7000
730 – Clarify SNOMED Coding Scheme Designators
731 – Clarify Use of MPPS Referenced Image Sequence
732 – Clarify Allowed Use of File Links
733 – Modify Hemodynamic Measurement Group Template
734 – Additional Treatment Positions
735 – Pixel Spacing Calibration Description Incorrect Tag
736 – TID 4023, CID 6048 Updates
737 – Revise EPS Sampling Parameters
738 – Add Context Group for Type of Multiframe Subset
1011
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007



739 – Add View Code Sequence to CT, MR, SC for Cardiac Views (Need to fix Type 3)
740 – Evidence Sequence References in SR and KOS Includes Presentation States
741 – Correct Table F.4-1 References
The following correction proposals were reviewed, refined and dispatched as noted:







658 – Conformance Statement Introduction Improvements
Reassigned to Harry Solomon.
663 – Add Multi-Frame Code to DCM
Replaced by CP738.
666 – Cardiac Trigger Window for Enhanced IODs
Continues assigned to David Clunie.
687 – Dose Reporting for Mammography
Continues assigned to David Clunie. Tcon required.
709 – Acquisition Context for Digital X-Ray
Continues assigned to David Clunie. Harry Solomon will bring vocabulary
issues to David Clunie’s attention.
725 – Add Real World Values for NM IOD
Continues assigned to Bas Revet.
729 – Change SCP-ECG Nomenclature to ISO/IEEE 11073 or SNOMED
Continues assigned to Harry Solomon.
The following change proposals were not ready for review at this meeting and were held over for
future consideration:











123 – Clarification of Unknown VR Byte Order Issues.
Continues assigned to David Clunie for additional work.
128 – Status Code Convention.
Continues assigned to Bas Revet for additional work.
145 – Curve Data Value Representation Clarification.
Continues assigned to David Clunie for additional work.
235 – Clarify NM detector start angle usage
Continues assigned to Jeff Pohlhammer for additional work.
269 – Define Media Storage Services
Reassigned to Andrei Leontiev for revision
296 – Eliminate Duplicate Terms and Provide Missing Definitions
Continues assigned to Harry Solomon for further work.
363 – Addition of attribute to MPPS for Group Study UID
Continues assigned to Al Belden for further work.
375 – Correct CID 4017 – Intra-oral Anatomy Modifier
Remains assigned to Allan Farman for future work.
398 – Add Ultrasound Contrast Agents
Remains assigned to WG-12/Anand Kumar.
402 – Add Attributes for Ultrasound Scan Geometry
Continues assigned to WG-12/Anand Kumar for further work.
419 – Ultrasound Region Modes
Continues assigned to WG-12/Anand Kumar for further work.
1012
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007

















6.
430 – Additions to PS 3.16 for Cardiac Cath SR
Continues assigned to Harry Solomon for further work.
450 – Correct Myocardium Mass
Continues assigned to WG-12/Anand Kumar for further work.
463 – Clarify That Order of Template Rows Is Significant
Continues assigned to Harry Solomon for additional work.
464 – Add SOP Common to the Print-related N-CREATEs
Continues assigned to Rob Horn for additional work.
471 – Add Common Finding Template
Continues assigned to Harry Solomon.
488 – RT Image Receptor Translation Clarification
Continues assigned to Scot Hogan
495 – Add Scheduled Procedure Step Code Sequence
Continues assigned to A. Belden for further work.
568 – Fix Figures and Media for OP Objects
Continues assigned to Herman Oosterwijk
591 – Attribute Identifier List for Errors in Sequence Attributes
Continues assigned to Harry Solomon.
594 – Table Position Requirements in Enhanced MR and MR Spectroscopy
Continues assigned to Anand Kumar
596 – Add Request and Schedule Information to Results and MPPS
Continues assigned to Rob Horn
597 – Instance Availability Notification Structure
Continues assigned to Harry Solomon
612 – MR Receive Coil Macro Changes in Enhanced MR and MR Spectroscopy
Continues assigned to Siemens Rep
650 – Add Pediatric Patient Size to Patient Demographics Module
Continues assigned to Harry Solomon
678 – Clarify Private Code Scheme in Conformance Statement
Assigned to Siemens voting representative
705 – ICC profiles for Basic Color Print
Temporarily assigned to Rob Horn
722 – Add Cross-Reference between Body Part Examined and Anatomic Region
Continues assigned to David Clunie
New Change Proposals
The following new change proposals were reviewed and dispatched as noted:
File ID
br48
dac66
dac67
dac68
dac69
dac70
CP
742
743
744
745
746
747
Name
Clarification of Slice Location Attributes
Correct Diffusion b-value Units
Add Diffusion b-matrix
Transfer Syntax UID Not Allowed Outside File Meta Information
Conditions under Which Pixel Spacing May Be Zero
Add clinical trial series identifier and description
1013
Assigned to
B. Revet
D. Clunie
D. Clunie
D. Clunie
D. Clunie
D. Clunie
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007
dac71
dac72
dac73
dac74
dac75
dac76
dac77
dac78
dac80
hs39
hs40_2
hs41
hs42
PixelCalib
748
749
750
751
752
753
754
755
756
757
758
759
760
761
WG01-2
ct_cascoring
762
763
ct_dosectdi_
phantom
ct_dualsource
ct_isocenter
ct_spiral_
exposuretime
764
7.
765
766
Rename Image Position to Image Box Position
Modality for Reports, Requests and Other Documents
Add Requesting Service Code
Add Coding Scheme Designator for RadLex
Update Reference to HL7 OID Registry for Coding Schemes
Correct Concatenation UID Element Number
Add Display Shutter Module to CR IOD
Correct Patient ID Tag
Add General Area and Volume Calculation Methods to SR Templates
Add RTSS ROI Feature UID
Clarify encoding rules for Private Sequences
Update Cardiovascular Patient History
Add User Friendly Definitions to Example Conformance Statements
Clarify Pixel Spacing Attribute Condition within Basic Pixel Spacing
Calibration Macro
Add Waveform Presentation Attributes
Calibration Factors for the Mass Score of the Calciumscoring
Evaluation
CT Phantom for CTDI Dose Measurement
D. Clunie
D. Clunie
D. Clunie
D. Clunie
D. Clunie
D. Clunie
D. Clunie
D. Clunie
D. Clunie
H. Solomon
H. Solomon
H. Solomon
H. Solomon
D. Clunie
Change Definition for (0018,9328) Exposure Time in ms for CT
Additional Value within C.8.2.1 CT Image Module Attribute
CT Spiral Exposure Time
B. Revet
B. Revet
Rejected. Get
agreement of
all CT vendors
on another
approach.
H. Solomon
B. Revet
B. Revet
Supplement 43 – Ultrasound ND Storage SOP Classes {WI 1998-08-C}
The DICOM Standards Committee authorized WG-12 to work on this topic in August of 1998.
However, other priorities dominated the group’s attention during the intervening years. Now,
under the leadership of Joseph Luszcz, WG-12 has resumed its efforts. To introduce the topic,
inform WG-06 of the current need for this work, and provide a comprehensive overview of its
approach to this topic, Mr. Luszcz delivered a PowerPoint presentation
(sup43_FirstReadingPresentation.ppt) that is included in the Minutes folder for this meeting.
Mr. Luszcz also presented a comprehensive list of Use Cases and a Use-Case Mapping
Document. This briefing was followed by consideration of a revised draft of Supplement 43
(version #23).
8.
Supplement 74 – Utilization of Worklist in Radiotherapy Treatment Delivery {WIR
2000-11-B}
Not discussed at this meeting. This supplement is under active development by members of
WG-07.
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Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007
9.
Supplement 78 – Fetal and Pediatric Echocardiography Procedure Reports
Not discussed at this meeting. This supplement is under active development by members of
WG-12.
10.
Supplement 95 – Audit Trail Messages {WI 2001-11-C}
This Supplement was approved as a Trial Use Draft during the June 2004 meeting of WG-06.
The results of these trials will be reviewed in a subsequent meeting.
11.
Supplement 96 – Unified Worklist and Procedure Step {WI 2000-11-B & 2003-12-A}
Not discussed at this meeting. This supplement is under active development by members of
WG-06.
12.
Supplement 107 – Substance Administration Information Services {WI 2004-09-D}
This supplement was approved for Letter Ballot during the WG-06 October meeting. Six sets of
comments were received with many coming from the nursing community via the Healthcare
Information and Management Systems Society (HIMSS). Mr. Solomon informed members of
WG-06 that he had prepared a response to the comments forwarded HIMSS and, earlier this
month, discussed them in person with the HIMSS representative and received her approval.
After reviewing all additional comments and the editor’s proposed response to them, members
conducted a detailed, line-by-line review of the resulting document. After clarifying the
conformance statement, members voted unanimously to approve the supplement for Final Text.
13.
Supplement 109 – SOP Instance Location Service {WI 2004-12-A}
Not discussed at this meeting. This supplement is under active development by members of
WG-06.
14.
Supplement 110 – Ophthalmic Tomography Image Storage SOP Class {WI 2003-06-C}
On behalf of WG-09, Herman Oosterwijk, Dr. Mark Horton of the Indian Health Service, Dr.
Linda Wedemeyer of the Veterans Health Administration, and Mr. Justin Pedro of Ophthalmic
Technologies presented and led a two-part discussion of version 15 of this draft supplement.
This produced several editorial refinements and improvements in consistency. WG-09’s input
regarding the definition of longitudinal (vs. perpendicular) OCT images was especially helpful.
At the conclusion of this discussion, members voted, with one abstention (Siemens), to approve
the document’s distribution for Public Comment.
15.
Supplement 114 – DICOM Encapsulation of CDA Documents {WI 2003-12-C}
This Supplement was distributed for letter ballot shortly after the WG-06 meeting in October
2006. Three sets of comments were received. After reviewing these comments and the editor’s
suggested response to them, members voted (with two abstentions – Toshiba and Siemens) to
approve Supplement 114 for Final Text.
1015
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007
Supplement 115 – Evidence Document SOP Classes {WI 2003-12-B}
16.
Harry Solomon reminded members of the new change proposal (Add RTSS ROI Feature UID),
which was designated CP757 during the group’s January 16 Tcon. He wanted to make sure that
members recognized its potential impact on this draft supplement.
Supplement 116 – 3D X-ray Storage SOP Class {WI 2005-09-C}
17.
This supplement was distributed for letter ballot shortly after the October 2006 meeting of WG06. While the ballot was approved, two sets of comments were received. WG-02 Chair Rainer
Thieme and Supplement Editor Bas Revet led a discussion of these comments and WG-02’s
response to them. Additionally, members conducted a quick line-by-line review of the entire
document. Upon completing this exercise and incorporating of some minor refinements,
members voted unanimously to approve its release for Final Text.
Supplement 117 – Enhanced PET Image Storage SOP Class {WI 2006-04-D}
18.
Not discussed at this meeting. This supplement is under active development by members of
WG-03. It was sent for Public Comment in August of 2006.
Supplement 118 – Application Hosting {WI 2004-09-E}
19.
Not discussed at this meeting. This supplement is under active development by members of
WG-23.
Supplement 119 – Instance and Frame Level Retrieve SOP Classes {WI 2005-12-A}
20.
Supplement Editor David Harvey presented and led a discussion of versions 4, 5, and 7 of this
draft supplement. As requested at the last meeting, Mr. Harvey has provided significant
additional detail for the following five use cases:





Clinical Review
Local use – “relevant priors”
Content based retrieval
CAD & data mining Applications
Independent WADO Server
As before, one of the key issues was how to handle WADO. Mr. Harvey will update the
document to reflect guidance provided during the course of this meeting and post it to the private
FTP site for discussion at the March meeting.
21.
Supplement 120 – Extended Presentation States {WI 2005-09-A}
Not discussed at this meeting.
22.
Supplement 121 – Modality Procedure Plan and Protocol Storage {WI 2006-04-E}
At its meeting in April of 2006, the DICOM Standards Committee approved a Work Item
Request on “Modality Protocol Storage” submitted by WG-06. Kevin O’Donnell is serving as
1016
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007
the author/editor of this draft supplement, which is being developed pursuant to that request.
The scope of the Supplement is to define a baseline for a family of modality-specific storage
SOP Classes for detailed protocol and procedure plan information. These SOP Classes include
details about:
 Patient preparation
 Patient positioning
 Acquisition technique
 Equipment characteristics
 Image processing
 Other?
Potential applications of this Supplement include:
 Distributing departmental or “best practice” protocols to modality systems
 Distributing clinical trial protocols (general or model specific) to participating sites
 Recording protocol details for a performed study to submit with clinical trial images for
technique validation
 Recording protocol details for a performed study to better perform comparable followup
or repeat studies
 Providing more protocol details to radiologists reviewing a study
Careful attention was given to a review of the Open Issues list. This was followed by a detailed
discussion of the “Procedure Context Module Attributes,” etc. WG-06 members encouraged Mr.
O’Donnell to add a use-case example dealing with clinical trials. This will help build
connections to ACRIN, caBIG, and CDISK and could help to reactivate DICOM’s WG-18.
23.
Supplement 122 – Specimen Identification and Revised Pathology SOP Classes {WI
2006-11-B}
Eleven members of WG-26 participated in this meeting of WG-06. On behalf of WG-26, Bruce
Beckwith led a high-level discussion of draft #7 of this supplement for the purpose of
familiarizing members of WG-06 with the primary objectives of the supplement. In the course
of this exchange, participants determined that it would be useful to introduce some new terms
like “pathology specimen photography” and “pathology slide microscopy.” Attention was also
focused on two accompanying documents “SUP122 specimen identification module examples”
and SUP122_revised specimen examples.” At the conclusion of this discussion, members of
WG-06 encouraged WG-26 to continue the development of this draft supplement and return at a
future meeting to review progress and possibly issue for public comment.
24.
Supplement 123 – Structured Display {WI 2004-12-C}
Not discussed at this meeting. This supplement is under active development by members of
WG-22.
25.
Supplement 124 – Communication of Display Parameters {WI 2004-12-B}
Not discussed at this meeting. This supplement is under active development by members of
WG-11.
1017
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007
26.
Supplement 125 – Breast Tomosynthesis
Not discussed at this meeting. This supplement is under active development by members of
WG-15.
27.
Supplement 126 – Colon CAD Structured Report {WI 2005-12-C}
Not discussed at this meeting. This supplement is under active development by members of
WG-15.
28.
Publishing DICOM in XML
No report at this meeting.
29.
New Business
C-FIND Performance Considerations
Rob Horn gave a PowerPoint presentation summarizing the challenges for C-FIND Performance.
A copy is available in the Minutes Folder for this meeting. Members believe that a Work Item
Request should be prepared to seek authorization for the development of a new supplement to
deal with these issues in a more efficient fashion.
Cardiac Stress SR {WI 2006-09-A}
On behalf of WG-01, Harry Solomon presented version #5 of a draft supplement that is part of a
larger project for an integrated stress testing data and workflow environment based on the
DICOM Standard being promoted by IHE’s Cardiology domain. The document was designated
draft Supplement 128.
CT Radiation Dose Reporting {WI 2004-04-C}
On behalf of DICOM’s WG-21 (CT), Bernard Hassold gave a PowerPoint presentation regarding
the need for and management of CT dose reporting. He, then, launched into a detailed review of
the file labeled “Sup94XX_ft_CT_08012007” [CT Radiation Dose Reporting (Dose SR)]. After
some substantial editing by the group, members agreed that the document was very nearly ready
for public comment. The document was designated draft Supplement 127. Mr. Hassold will
provide an updated version for consideration in March.
Electrophysiology Structured Reports and Procedure Log Templates {WI 2006-04-A}
On behalf of WG-01, Harry Solomon presented version #5 of a draft supplement that is part of a
larger project for an integrated, stress-testing data and workflow environment that is based on the
DICOM Standard and being promoted by IHE’s Cardiology domain. The document was
designated draft Supplement 129.
Handling Large Pathology Images {WI 2006-11-C}
In some circumstances, Pathologists can encounter very large digital files (375 GB or larger)
associated with whole slide images. The issue for this discussion is how DICOM might be able
1018
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007
to assist with acquiring, storing, retrieving, and displaying such files or selected parts of those
files. Members of WG-26 have been struggling with this issue for some time and have
developed some ideas on how best to utilize DICOM for this purpose. On behalf of WG-26, Ole
Eichhorn presented a summary of their current thinking and identified several issues for which
WG-06 might be able to make specific recommendations. A copy of Mr. Eichhorn’s
presentation may be found in the Minutes Folder for this meeting. Members of WG-06 were
impressed with the progress to date and saw numerous connections between some of DICOM’s
more recent technologies (e.g., multiframe MR and CT images) and projected capabilities (e.g.,
frame level retrieve from MR and CT objects). They urged WG-26 to prepare a new supplement
based on the recently approved Supplement 116 (3D X-ray Storage SOP Class.) Members of
WG-26 will determine the best opportunity to return with a draft supplement.
HL7 CMET Ballot
On behalf of WG-20, Dr. Helmut Koenig joined the meeting via a WebEx enhanced
teleconference and reviewed the recently completed HL7 CMET ballot process – including a
review of the one significant ballot comment and WG-20’s response to it. The file
"Wg20_CmetMembershipBallotJanuary2007.doc" has been uploaded to
the WG-06 folder on the ftp site.
During the ensuing discussion, members of WG-06 noted that DICOM has:
 Blending Presentation,
 Stereometric,
 Deformation,
 Etc.
where these objects refer to other objects. They wondered whether HL7 needs to capture this.
For example,
DICOM
HL7-CDA
Stereometric Object

Left Image
?????

Right Image
There appear to be two options:
A. Just list the three objects.
B. Define the relationships.
Blending, deformation, etc. involve more relationships.
Option “A” is fully complete for a DICOM-aware system, because the SOP Classes, Instances,
and container fully define the relationships.
Option “B” is needed if non-DICOM-aware systems need to know something about the
relationships.
1019
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007
Ophthalmic Refractive Structured Reports {WIR 2005-12-B}
On behalf of WG-09, Dr. Linda Wedemeyer gave a short presentation to members of WG-06
regarding the normal procedures for eye examinations and the resulting need for DICOM
structured reports. A copy of her presentation (OphthalmicSRPresentation.ppt) is available in
the Minutes folder for this meeting. One key issue was whether this application required the
Structured Report format. This document was designated draft Supplement 130.
30.
Future Meetings
The Group’s future meeting dates and locations are as follows:








March 16, 2007 – Tcon for CPs
March 26 – 30, 2007 at NEMA
June 19, 2007 – Tcon for CPs
June 25 – 28, 2007 in Berlin (Half day on June 28)
August 21, 2007 – Tcon for CPs
August 27 – 30, 2007 at NEMA
October 23, 2007 – Tcon for CPs
October 29 – November 1, 2007 at NEMA
Unless otherwise noted, meetings are scheduled from 8:30 AM to 5:30 PM each day; T-cons
begin at 10 AM Eastern Time and extend for two hours.
31.
Next Meeting Agenda
A detailed agenda for the next meeting will be prepared at a later date.
Anticipated topics for March (marked in bold) include:
Topic
CPs
Sup043
Sup074
Sup095
Sup096
Sup109
Sup110
Sup115
Sup117
Sup118
Sup119
Sup120
Sup121
Sup122
Sup123
Sup124
Sup125
Goal
Hours
Title
2 1 1
2 2 2 Ultrasound ND Storage SOP Classes – J. Luszcz
PC
2 2
RT Worklist – D. Murray (March)
LB
Review
Audit Trail – L. Tarbox
2 2
Unified Worklist and Procedure Step – K. O’Donnell (March)
LB
SOP Instance Location Service – H. Solomon (Thur. or Fri.)
2 2
Ophthalmic Coherence Tomography – H. Oosterwijk
LB
Evidence Document – H. Solomon (Thur. or Fri.)
2 2
Enhanced PET – J. Pohlhammer
LB
1
Application Hosting – L. Tarbox
PC
1
Frame Level Retrieve – D. Harvey (Tcon)
PC
PC
Extended Presentation States – M. Pisot (June)
FR
Protocol Storage – K. O’Donnell (June)
PC
Specimen Identification in Pathology – B. Beckwith (June)
FR
Structured Display – J. Goyette (June)
PC
Display Parameter Retrieval – N. Matsui (March or June)
1 1
Breast Tomosynthesis (March)
PC
1020
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007
Sup126
Sup127
Sup128
Sup129
SupXXX
Sup130
SupXXX
PC
PC
PC
PC
FR
PC
FR
Admin.
32.
1
1
1
1
1
2
2
1
1
1
1
Colon CAD Structured Report – T. Gedeon
CT Radiation Dose Reporting – B. Hassold Tcon???
Cardiology Stress SR - H Solomon (Thur. or Fri.)
Cardiology Electro Physiology SR (March) (Thur. or Fri.)
Polygonal Segmentation (March) (WG-17)
Ophthalmic Refractive Structured Reports
Whole Slide Imaging in Pathology
1
Adjournment
The meeting was adjourned at 3:20 P.M. on January 26, 2007.
Reported by:
Howard E. Clark, Secretary
February 9, 2007
Reviewed by counsel:
February 12, 2007
1021
Working Group Six (Base Standard)
of the DICOM Standards Committee
January 22 – 26, 2007