Transcript S01_Arvind_DICOM Seminar Introduction.ppt

Welcome to DICOM Public Seminar
Day 3, Singapore Meeting
We would like to thank A-STAR for hosting this event!
We would also like to thank MatrixView for sponsoring the lunch!
Not the first time for DICOM to meet in Asia, but definitely the first time in Singapore!
Exceptionally good program that offers something for everyone!
Introduction to DICOM
DICOM history
Other Standards
Scope of DICOM
Technology Overview
DICOM Working Groups
Arvind Thiagarajan
Member- WG 4, DSC
Chief Scientist, Matrixview
ACR-NEMA
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1982 - ACR and NEMA form a joint committee
1985 - Publication of Version 1.0
1988 - Compression and Mag Tape Standards
1988 - Publication of Version 2.0
1989 - Began work on Network Version with
HIS/RIS
First meeting organized by ACR and NEMA in 1983
DICOM
• The name was changed to separate the
standard from the originating body
• 1991 - Release of Parts 1 and 8 of DICOM
• 1992 - RSNA demonstration, Part 8
• 1993 - DICOM Parts 1-9 approved,
RSNA demonstration of ALL parts
• 1994 - Part 10: Media Storage and File Format
• 1995 - Parts 11,12, and 13 plus Supplements
First successful DICOM Standard issued in 1993
Communication Standards
• Protocols are defined by standards
• A Standard is an agreement which may be voluntary,
Government mandated, or International Law
• Protocols may also be proprietary
Who Defines Communication Standards?
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User Consortia (e.g., HL7)
Organizations (e.g., NEMA, IEEE)
US Government Agencies (e.g., ANSI, NIST)
Foreign Government Agencies (e.g., CEN)
United Nations (e.g., ISO, CCITT)
DICOM’s Relationship to Other Standards
• The initial version leveraged on prior work by ASTM.
• The Internet protocol TCP/IP adopted in 1993.
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In the nineties, solid cooperation with CEN, the European
Committee for Standardization
• Convergence of a Japanese interchange media format (IS&C) &
JIRA, the Japan Industries Association of Radiological Systems
• Coordination efforts with the ANSI-HISBB in the USA
• Started progressively to define links with HL7 resulting in joint
DICOM-HL7 working group.
• Type A liaison with the ISO Technical Committee 215 at its creation
in 1999
Communication Protocols :Key to
Connectivity
• Layered Model, each layer performs a
specific function
• Set of Services and Protocols
• Connectivity requires sharing of a
complete protocol
• Communication requires a shared
Semantic Context
ISO Reference Model
APPLICATION
Upper Layers
(DICOM)
PRESENTATION
SESSION
Lower Layers
File Transfer, E-mail, HTTP
Data Formatting, Compression,Encryption
Synchronization,Comm. Management
TRANSPORT
End-to-End communication
NETWORK
Internetworking
DATA LINK
LLC
MAC
PHYSICAL
Ethernet, FDDI, etc.
Fiber, Coax, UTP, µWave
Scope of DICOM
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To create & maintain international standards for communication of
biomedical diagnostic and therapeutic information in disciplines that use
digital images & associated data
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To achieve compatibility & to improve workflow efficiency between imaging
systems & other information systems in healthcare environments worldwide.
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DICOM is a cooperative standard
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Every major diagnostic medical imaging vendor in the world has
incorporated the standard into their product design
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Most of the professional societies throughout the world have supported &
are participating in the enhancement of the standard as well
DICOM is the ONLY standard in the world that covers
the exchange of medical images
Scope of DICOM
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DICOM is used or will soon be used by virtually every medical profession that
utilizes images within the healthcare industry.
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These include
– Cardiology
– Dentistry
– Endoscopy
– Mammography
– Opthamology
– Orthopedics
– Pathology
– Pediatrics
– Radiation therapy
– Radiology
– Surgery, etc.
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Initiatives are underway to add image guided surgery, pathology and veterinary
practice
The Parts of the DICOM Standard
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Part 1 - Introduction and Overview
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Part 2 - Conformance
Part 10: Media Storage and File Format
for Media Interchange
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Part 3 - Information Object Definitions
Part 11: Media Storage Application
Profiles
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Part 4 - Service Class Definitions
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Part 12: Media Formats and Physical
Media for Media Interchange
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Part 5 - Data Structures & Semantics
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Part 6 - Data Element Listing and Typing
Part 14: Grayscale Standard Display
Function
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Part 7 - Message Exchange Protocol
Part 15: Security and System
Management Profiles
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Part 16: Content Mapping Resource
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Part 17: Explanatory Information
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Part 18: Web Access to DICOM
Persistent Objects (WADO)
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Part 8 - Network Support for Message
Exchange
More than 100 supplements (extensions) to the
Standard provide additional capabilities
Technology Overview
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DICOM Functionality: Service
Classes
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Archive/Transfer Images: Store
(across network)
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Archive/Interchange Images: Media
Storage
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Query for Information & Retrieve
Images
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Make Image Hardcopies: Print
Management
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Patient, Study & Results
Management
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RIS-Modality: Worklist Management
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Test Connectivity: Verification
Technology Overview
At the application layer, the services and information objects address
five primary areas of functionality:
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Transmission and persistence of complete objects (such as images, waveforms and
documents)
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Query and retrieval of such objects
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Performance of specific actions (such as printing images on film)
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Workflow management (support of worklists and status information)
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Quality and consistency of image appearance (both for display and print)
The DICOM Standards Committee &
Working Groups
WG1: Cardiac and Vascular
Information
WG12: Ultrasound
WG2: Digital X-Ray
WG13: Visible Light
WG3: Nuclear Medicine
WG14: Security
WG4: Compression
WG15: Digital Mammography
WG5: Exchange Media
WG16: Magnetic Resonance
WG6: Base Standard
WG17: 3D
WG7: Radiotherapy
WG18: Clinical Trials and Education
WG8: Structured Reporting
WG19: Dermatologic Standards
WG9: Ophthalmology
WG20: Integration of Imaging and
Information Systems
WG10: Strategic Advisory
WG21: Computed Tomography
WG11: Display Function Standard
WG-22: Dentistry
WG-23: Application Hosting
• Various presentations throughout the day will touch on
most of DICOM topics.
• To learn more, come to the DICOM 2005 International
Conference and Workshop in Budapest -- September
26 - 28, 2005.
• To find current information,visit DICOM Web Page at:
http://medical.nema.org/ or http://dicom.nema.org/
(No "www")
• Specific, technical questions can be addressed
to http://groupsbeta.google.com/group/comp.protocols.dicom?hl=en