ITU-T VICA Workshop 22-23 July 2005, ITU Headquarter, Geneva International Telecommunication Union MPEG MPEG - - 2 extends DICOM 2 extends DICOM to new domains to new domains ( ( Endoscopy Endoscopy , , Microscopy, Surgery) Microscopy, Surgery) Georges LE GOUALHER ETIAM
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ITU-T VICA Workshop22-23 July 2005, ITU Headquarter, Geneva
International Telecommunication Union
MPEGMPEG--2 extends DICOM 2 extends DICOM to new domains to new domains ((EndoscopyEndoscopy, ,
Microscopy, Surgery)Microscopy, Surgery)
Georges LE GOUALHERETIAM
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ITU-TMission Mission StatementStatement: : EnablEnablee Multimedia Connectivity forMultimedia Connectivity for HealthcareHealthcare
oo DICOM Solutions for DICOM Solutions for Medical ImagingMedical Imaging NetworksNetworks•• Member Member of of the the DICOM Standards DICOM Standards committeecommittee
•• (Emmanuel Cordonnier, (Emmanuel Cordonnier, ETIAMETIAM chairmanchairman))
•• Sell Sell DICOM DICOM toolkitstoolkits, modules, applications, , modules, applications, devicesdevices•• Final Final usersusers•• OEM OEM partnerspartners
•• wwwwww..etiametiam..comcom•• Rennes, FranceRennes, France
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DICOM Overview
o Digital Imaging and COmmunications in Medicine
• Digital Image format• Communication protocol
o 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
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DICOM Members
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Hospital Workflow
imagesstored
Filmimagesprinted
acquisitioncompleted
report
acquisitioncompleted
Initial captureof patientdemographicinformation
Registration
patientinformation
Orders Placed
Referringphysicianorders thedesiredradiologyprocedure
RISexamination orders
Orders Filled
Break down theentered order intospecific radiologyprocedure steps tobe performed
imagesretrieved
FilmFolder
ReportRepository
Radiology report storedfor network access
HIS
Image Managerand Archive
Diagnostic imageand demographic
info stored fornetwork access
PACS
procedurescheduled
Prefetch any relevantprior studies
modalityworklist
Patient and procedureinformation retrievedby the modality
Modality
Position patientand acquire image
Diagnosticimage and
demographicinfo presented to
radiologist
DiagnosticWorkstation
FilmLightbox
reportreport
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DICOM Services
1. DICOM Worklist • HIS/RIS inquiry to get patient information
and examination planning2. 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
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DICOM from X-Ray to VL:From Still Images To Video
Radiology Visible Light
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Visible Light Applications
Microsurgery
Rigid Endoscopy
Flexible Endoscopy
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DICOM Visible Light Video (1)
o New Information Object Entities (IODs)• Endoscopy, Microscopy, Photography• Exemple: Endoscopy IOD
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DICOM Visible Light Video (2)
o Video data encoded in MPEG-2. WhyMPEG-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
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Implementation (EAES 05)
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DICOM Visible Light Videos:Challenges
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
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DICOM Visible Light Video:Challenges
o Video specific issues• Video quality
• Main Profile Main Level (MP@ML), 8 Mbps, variable bit rate (DVD quality)
• Video consultation• Bandwidth & space issues• Streaming
• Video workflow• Selection of sequence / sub-sequences / still images• Time to copy on media / servers
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Conclusion
o MPEG-2 extends DICOM to new domains• extend PACS to all digital images & videos
produced by the hospitalo Advantages
• quicker access to relevant images, resulting in improved patient care
o Perspectives• increase the usage of DICOM in the context of
Visible Light • video quality management (MPEG4?)
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