CTSC:ARRA.010510

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Agenda

  1. DICOM query retrieve tool

Harvard Catalyst Medical Informatics group Meeting Minutes January 5, 2010

In attendance:

  • Valerie Humblet
  • Mike Mendis
  • Shawn Murphy
  • Bill Tellier
  • Mark Anderson
  • Bill Hanlon
  • Todd Perlstein
  • Jesse Wei


  • The goals of the meetings were:
    • to review where we are in the mi2b2 architecture
    • to go through the workflow
    • to get a couple of assignments and output samples


  • Architecture:
    • i2b2: PI makes a query, requests images with medical record number (MRN) or accession number. We need to define what is a study at the different institutions. The MRN will probably not be enough, one will need to add the date or the modality etc.
    • PACS: Images are extracted and send to XNAT.
    • XNAT: new derived data send back to i2b2.


  • Accession number: if we send an accession number (acc.#), will we get a study or an image?
    • BWH and MGH: it leads to s study. For billing purpose, there are different acc.# for the same study (ex: if one order an MRI/MRA, 2 acc # are generated but they lead to the same study.
    • CHB: acc.# leads to a study.
    • BIDMC: one acc.# per patient encounter.


  • UID:
    • In theory, no 2 images will ever have the same UID.
    • Each manufacturer is assigned numbers.
    • UID is created by the modality.
    • You don't need to know it to get data from the PACS, PACS works with acc.#
    • UID is for internal accounting and unique identification. If you derived data, you need another UID.