1. Welcome to DICOM Public Seminar Day 3, Singapore Meeting 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! We would like to thank A-STAR for hosting this event! We would also like to thank MatrixView for sponsoring the lunch!

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

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 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 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)

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 WG1: Cardiac and Vascular Information WG12: Ultrasound WG2: Digital X-RayWG13: Visible Light WG3: Nuclear MedicineWG14: Security WG4: CompressionWG15: Digital Mammography WG5: Exchange MediaWG16: Magnetic Resonance WG6: Base StandardWG17: 3D WG7: RadiotherapyWG18: Clinical Trials and Education WG8: Structured ReportingWG19: Dermatologic Standards WG9: OphthalmologyWG20: Integration of Imaging and Information Systems WG10: Strategic AdvisoryWG21: Computed Tomography WG11: Display Function StandardWG-22: Dentistry WG-23: Application Hosting

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