Welcome to DICOM Public Seminar Day 3, Singapore Meeting

1. 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!

2. Introduction to DICOM DICOM history Other Standards Scope of DICOM Technology Overview DICOM Working Groups Arvind Thiagarajan Member- WG 4, DSC Chief Scientist, Matrixview

3. ACR-NEMA • 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

4. 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

5. 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? • 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)

6. DICOM’s Relationship to Other Standards • The initial version leveraged on prior work by ASTM. • The Internet protocol TCP/IP adopted in 1993. • 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

7. 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

8. ISO Reference Model File Transfer, E-mail, HTTP APPLICATION Upper Layers (DICOM) Data Formatting, Compression,Encryption PRESENTATION Synchronization,Comm. Management SESSION End-to-End communication TRANSPORT Internetworking NETWORK Lower Layers LLC DATA LINK MAC Ethernet, FDDI, etc. PHYSICAL Fiber, Coax, UTP, µWave

9. Scope of DICOM • To create & maintain international standards for communication of biomedical diagnostic and therapeutic information in disciplines that use digital images & associated data • To achieve compatibility & to improve workflow efficiency between imaging systems & other information systems in healthcare environments worldwide. • DICOM is a cooperative standard • Every major diagnostic medical imaging vendor in the world has incorporated the standard into their product design • 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

10. Scope of DICOM • DICOM is used or will soon be used by virtually every medical profession that utilizes images within the healthcare industry. • These include • Cardiology • Dentistry • Endoscopy • Mammography • Opthamology • Orthopedics • Pathology • Pediatrics • Radiation therapy • Radiology • Surgery, etc. • Initiatives are underway to add image guided surgery, pathology and veterinary practice

11. The Parts of the DICOM Standard • Part 10: Media Storage and File Format for Media Interchange • Part 11: Media Storage Application Profiles • Part 12: Media Formats and Physical Media for Media Interchange • Part 14: Grayscale Standard Display Function • Part 15: Security and System Management Profiles • Part 16: Content Mapping Resource • Part 17: Explanatory Information • Part 18: Web Access to DICOM Persistent Objects (WADO) • Part 1 - Introduction and Overview • Part 2 - Conformance • Part 3 - Information Object Definitions • Part 4 - Service Class Definitions • Part 5 - Data Structures & Semantics • Part 6 - Data Element Listing and Typing • Part 7 - Message Exchange Protocol • Part 8 - Network Support for Message Exchange More than 100 supplements (extensions) to the Standard provide additional capabilities

12. Technology Overview • DICOM Functionality: Service Classes • Archive/Transfer Images: Store (across network) • Archive/Interchange Images: Media Storage • Query for Information & Retrieve Images • Make Image Hardcopies: Print Management • Patient, Study & Results Management • RIS-Modality: Worklist Management • Test Connectivity: Verification

13. Technology Overview At the application layer, the services and information objects address five primary areas of functionality: • Transmission and persistence of complete objects (such as images, waveforms and documents) • Query and retrieval of such objects • Performance of specific actions (such as printing images on film) • Workflow management (support of worklists and status information) • Quality and consistency of image appearance (both for display and print)

14. The DICOM Standards Committee & Working Groups

15. 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://groups-beta.google.com/group/comp.protocols.dicom?hl=en