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A DICOM mechanism for multicast streaming

A DICOM mechanism for multicast streaming. Rafael MAYORAL , Adrián VÁZQUEZ, Stefan BOHN, Oliver BURGERT Innovation Center Computer Assisted Surgery, University of Leipzig. Outline. Motivation Isolated systems Goal Continuous data transmission Modeling the system A general framework

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A DICOM mechanism for multicast streaming

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  1. A DICOM mechanismfor multicast streaming Rafael MAYORAL, Adrián VÁZQUEZ, Stefan BOHN, Oliver BURGERT Innovation Center Computer Assisted Surgery, University of Leipzig

  2. Outline • Motivation • Isolated systems • Goal • Continuous data transmission • Modeling the system • A general framework • DICOM implementation • Our first implementation • Conclusion DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  3. Display Display App Patient App Display Motivation: Isolated systems App DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  4. Goal • Operating Room of the future • More integration • Easy sharing of sensors/actuators/modalities • Improve workflow • Combine data into a single data space • Support the concept of Patient Model • Create advanced functionalities DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  5. Patient Communication infrastructure App Display App App App Display Goal Sensors/Actuators/Modalities Workstation DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  6. Patient Communication infrastructure App Display App App App Display Goal • Similar to PACS • Several heterogeneous devices • Communication infrastructure Sensors/Actuators/Modalities Workstation DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  7. Patient Communication infrastructure App Display App App App Display Continuous data transmission Sensors/Actuators/Modalities Workstation But … Continuous data transmission DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  8. Modeling the system • Use case: get continuous data DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  9. Modeling the system • Client/Server • Device description • Use functionalities • Two interfaces: Management and Data Access DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  10. Device Description Common attributes Client Server Name Initiate/Terminate connection Accept/reject connections Manufacturer Serial Number Request device description Maintain/serve the device description Type Subscribe/unsubscribe to a specific data source Manage the data sources Specific Attributes General data information Interpret status reports Generate/send status reports Source 1 description Start/stop receiving data Source 2 description … Services Source n description Description A general framework • Describe devices and use functionalities DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  11. Device Description Common attributes Client Server Name Initiate/Terminate connection Accept/reject connections Manufacturer Serial Number Request device description Maintain/serve the device description Type Subscribe/unsubscribe to a specific data source Manage the data sources Specific Attributes General data information Interpret status reports Generate/send status reports Source 1 description Start/stop receiving data Source 2 description … DIMSE Services Source n description DICOM IOD DICOM implementation • Describe devices and use functionalities DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  12. DIMSE Services DICOM IOD Data-specific protocol Possibly several different communication technologies DICOM implementation DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  13. DICOM implementation • Why DICOM? • At every point of the process the data will be within the PACS logical domain • The data becomes an integrated part of the patient’s files • Tight integration with the other hospital areas • These concepts already present in DICOM • Use of appropriate external protocols • Referenced pixel data transfer syntax • Use of the JPEG 2000 Interactive Protocol (JPIP) • Describe devices & use DIMSE N-Services to perform operations • Print Management Service • Media Creation Management Service DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  14. Client Server Initiate/terminate connection Accept/reject connections Request device description Maintain/serve the device description Subscribe/unsubscribe to a specific data source Manage the data sources Interpret status reports Generate/send status reports DICOM implementation • DIMSE services implement required services A-ASSOCIATE N-GET N-ACTION N-EVENT-REPORT DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  15. Device Description Module Reference Module Description Common attributes SOP Common C.12.1 Contains SOP Common information Name Streaming Device Common Module X.XX.X Contains general information relevant to all types of streaming devices Manufacturer Serial Number Type Tracking Streaming Device Configuration Module X.XX.X Describes key configuration characteristics of a tracking device as a streaming source Specific Attributes General data information Source 1 description Source 2 description … Source n description DICOM implementation • DICOM IOD describes the devices • Devices modeled as IODs • Composed of different modules • Modules may be reused DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  16. Communication infrastructure Our first implementation • What are we working on? Endoscope Navigation application Tracking Ultrasound DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  17. Communication infrastructure Our first implementation • What are we working on? Endoscope Navigation application Tracking Data streaming using RTP over an Ethernet network Ultrasound DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  18. Our first implementation • DICOM IOD: Example Common attributes Specific device class attributes DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  19. Our first implementation • DICOM IOD: Example Common attributes Specific device class attributes DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  20. Our first implementation • What’s next? • Integrate dedicated video distribution infrastructure • How to model the video router? • How to model the video sources? • What technologies? • Thorough analysis with increasingly complex scenarios DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  21. Conclusion • Continuous data transmission is a critical feature of the Operating Room of the future • An appropriate architecture needs to deal with data and requirements that are heterogeneous • DICOM possesses the mechanisms to accommodate transmission of heterogeneous continuous data • We have created an experimental implementation using DICOM and RTP for streaming • Future work will include handling additional data types with different requirements DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

  22. Thank you Acknowledgement The Innovation Center Computer Assisted Surgery (ICCAS) at the Faculty of Medicine at the University of Leipzig is funded by the German Federal Ministry for Education and Research (BMBF) and the Saxon Ministry of Science and the Fine Arts (SMWK) in the scope of the initiative “Unternehmen Region” with the grant numbers 03 ZIK 031 and 03 ZIK 032. DICOM INTERNATIONAL CONFERENCE & SEMINARApril 8-10, 2008 Chengdu, China

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