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.