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Interactive Medical Imaging over the Network

Interactive Medical Imaging over the Network. Raffaele Noro, Olivier Verscheure and Jean-Pierre Hubaux Institute for computer Communications and Applications phone: + 41 21 693.6791; fax: +41 21 693.6610 {noro, verscheure, hubaux}@epfl.ch http://icawww.epfl.ch. Centre Hospitalier

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Interactive Medical Imaging over the Network

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  1. Interactive Medical Imaging over the Network Raffaele Noro, Olivier Verscheure and Jean-Pierre Hubaux Institute for computer Communications and Applications phone: + 41 21 693.6791; fax: +41 21 693.6610 {noro, verscheure, hubaux}@epfl.ch http://icawww.epfl.ch Centre Hospitalier Universitaire Vaudois Lausanne

  2. HIS 2 HIS 1 4. Examination 3. Local storage N-ISDN LAN LAN 1. Request 2.Transmission Motivation behind this work • Medical imaging: diagnosis, therapy and follow-up • Hospital Information Systems (HIS): store and access images in digital format • Medical images: large amount of information (10-100 Mbits) • Full image transfer over N-ISDN technology is implemented in current systems: dowload time is not acceptable: 1-10 min Problem: how to provide real interactivity?

  3. Framework • Region of Interest: • most of the image in low resolution • a user selected portion of the original image in better resolution • Real-time through ATM technology • Database access vs. transfer and storage of local copies

  4. Prototype features • Point-to-point ATM connection • User interface • MPEG-2 coding • Coordination: request-display synchronization Client’s display RoI Hierarchical access MPEG-2 packing Client request MPEG-2 Decoding RoI selection Hierarchical database Network adaptation Network adaptation ATM connection

  5. Live presentation: telepathology • Inspection of a stomach specimen: four resolution levels, from low- to high -resolution level • Operations: dynamic selection of the RoI at client interface, synthetic MPEG-2 stream generated by the server • Server and client directly connected to the ATM switch: the display terminal communicates with the client through IP. Terminal Server Hierarchical access Client MPEG-2 packing Client request IP AAL 5 MPEG-2 decoding RoI selection ATM switch AAL 5

  6. Conclusion • Achievement: We have developed a prototype for interactive tele-diagnosis over high-speed network in close collaboration with medical doctors • Future research: extension to multi-point • References: • R. Noro et al., Real-Time Telediagnosis of Radiological Images through an Asynchronous Transfer Mode network: The ARTeMeD Project, Journal of Digital Imaging, vol. 10, pp. 116-127, Aug. 1997

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