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2023-04-24.md

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2022-04-24

Agenda

  • Vector Databases - used in AI/ML

  • HIMSS 2023 Feedback

    • Weird to be in McCormick Place and it not be RSNA
    • LLM / ChatGPT / AI/ML
      • Epic/MSFT ChatGPT integration
    • Felt very "vendor heavy"
    • AI more mature
      • More focus on solutions - what is meaningful to implement
    • "This is the last year of HIMSS before ChatGPT disruption"
      • Lots of vendors products will be replaced by ChatGPT solutions?
      • On the cusp of crazy change
    • Attendance ~ 40K - less than RSNA at its peak
    • More healthcare providers than vendors
    • Culture is different - more C level execs attending or presenting
      • More receptive to putting high level execs on stage to do talks
      • RSNA makes presentations more generic / no branding
    • Interoperability showcase - lots of floorspace (4x the size of the AI one at RSNA)
    • Hot topics
      • Provider fatigue - hungry for any solution to help with this
      • Human resource shortage
    • ChatGPT Language Translation
    • Critcisms:
      • Shuttle service sucked
        • Frequency was lower
      • Missing Carpets!
      • Booth numbering was nonsense
      • Booths were smaller
        • Eisle ways were half - 1/3 as wide

  • DICOM Pixel Formats - signed, unsigned, bits allocated, bits stored, high bit, number of components, photometric interpretation, endianess

    • How many of these are relevant w.r.t. backwards compatibility
    • Do you have to deal with this still? YES
      • Implicit LIttle Endian is the only transfer syntax you can count on
    • AHLI tries to simlify this and transcodes everything to HTJ2K
    • NOTE: Compression algorithm headers override DICOM attributes
    • Movement in IHE to go towards FHIR Implementation Guide (IG) development of profiles
      • Challenges
        • FHIR standard is moving very quickly
        • Measuring standards compliance
      • IHE Compliance tool "Gazelle"
        • Groups trying to turn Gazelle into a FHIR compliance testing tool
      • Has not been a lot of collaboration between DICOM and HL7/FHIR recently
        • There should be more
        • Should be better linking between FHIR and DICOM
    • FHIR Implementation conformance framework:
    • DICOM Schema is "huge"
      • 4000+ attributes, many of which are not required
      • Multi-frame vs single frame
      • Private attributes
    • HL7 FIR r5 ImagingSelection Resource
    • Would be nice to have a layer that "normalizes" the pixel data?
      • CornerstoneJS does this to an extent because JavaScript is not strongly typed (pixel data is an array of numbers)
        • Doing more normalization than this would be probelmatic for some use cases
    • https://github.com/PantelisGeorgiadis/dcmjs-imaging