International Telecommunication Union
MPEG-2 extends DICOM
to new domains (Endoscopy,
Microscopy, Surgery)
Georges LE GOUALHER
ETIAM
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
Mission Statement: Enable Multimedia Connectivity for Healthcare
ITU-T
o DICOM Solutions for Medical Imaging Networks
• Member of the DICOM Standards committee
• (Emmanuel Cordonnier, ETIAM chairman )
• Sell DICOM toolkits, modules, applications, devices
• Final users
• OEM partners
• www.etiam.com
• Rennes, France
2005-07-22
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
2
DICOM Overview
ITU-T
o
Digital Imaging and COmmunications in
Medicine
•
•
o
Digital Image format
Communication protocol
History
•
[1983-1988] ACR/NEMA V1.0 and V2.0
•
•
American College of Radiology
National Electrical Manufacturers Association
• [1993] DICOM 3.0
• ACR/NEMA
• JIRA, CEN TC251
2005-07-22
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
3
DICOM Members
ITU-T
2005-07-22
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
4
Hospital Workflow
ITU-T
Initial capture
of patient
demographic
information
Radiology report stored
for network access
report
Registration
HIS
report
Report
Repository
Film
Diagnostic
Lightbox
Workstation
patient
information
Referring
physician
orders the
desired
radiology
procedure
PACS
examination orders
Orders Filled
Break down the
entered order into
specific radiology
procedure steps to
be performed
images
retrieved
Diagnostic image
and demographic
info stored for
network access
Orders Placed
RIS
2005-07-22
Diagnostic
image and
demographic
info presented to
radiologist
report
procedure
scheduled
Prefetch any relevant
prior studies
modality
worklist
Patient and procedure
information retrieved
by the modality
Modality
Image Manager
and Archive
images
stored
acquisition
Position patient
completed
ITU- T VICA Workshop
and acquire image
22-23 July 2005, ITU Headquarter, Geneva
Film
Folder
acquisition
completed
images
printed
Film
5
DICOM Services
ITU-T
1. DICOM Worklist
• HIS/RIS inquiry to get patient information
and examination planning
2. DICOM IOD
• Data set = {patient information, images}
3. DICOM Store
• Transfer of the acquired data to a PACS
4. DICOM Query & Retrieve
• Enterprise wide access
2005-07-22
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
6
DICOM from X-Ray to VL:
From Still Images To Video
ITU-T
Radiology
2005-07-22
Visible Light
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
7
Visible Light Applications
Rigid Endoscopy
ITU-T
Microsurgery
Flexible Endoscopy
2005-07-22
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
8
DICOM Visible Light Video (1)
ITU-T
2005-07-22
o
New Information Object Entities (IODs)
• Endoscopy, Microscopy, Photography
• Exemple: Endoscopy IOD
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
9
DICOM Visible Light Video (2)
ITU-T
o
Video data encoded in MPEG-2. Why
MPEG-2?
• Open, mass market established
standard
• Compatibility to DVD and Networks
• Low cost technology base (chips…)
• Inter-operability & flexibility
• Scalable bit rates
• Industry Support…
• and STABLE
2005-07-22
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
10
Implementation (EAES 05)
ITU-T
2005-07-22
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
11
DICOM Visible Light Videos:
Challenges
ITU-T
o
DICOM general issues:
• Encourage the use of DICOM workflow
in non DICOM familiar environment
• Coordination between vendors
• Installation of DICOM Visible Light
compatible modalities
• Connection with compatible PACS
2005-07-22
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
12
DICOM Visible Light Video:
Challenges
ITU-T
o
Video specific issues
•
Video quality
•
•
Video consultation
•
•
•
Bandwidth & space issues
Streaming
Video workflow
•
•
2005-07-22
Main Profile Main Level (MP@ML), 8 Mbps, variable
bit rate (DVD quality)
Selection of sequence / sub-sequences / still images
Time to copy on media / servers
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
13
Conclusion
ITU-T
o
MPEG-2 extends DICOM to new domains
•
o
Advantages
•
o
quicker access to relevant images, resulting in
improved patient care
Perspectives
•
•
2005-07-22
extend PACS to all digital images & videos
produced by the hospital
increase the usage of DICOM in the context of
Visible Light
video quality management (MPEG4?)
ITU- T VICA Workshop
22-23 July 2005, ITU Headquarter, Geneva
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