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MRC servers

Server architecture

Karolinska Institute's MR centrum owns five imaging servers: * Alvik: Compute server running Linux CentOS 7, with access to the storage server (where your data is located). * Slussen: Storage server * Skanstull: Storage server (clone) * Fou1: DICOM server, not in use for the moment (August 2020). * Fou2: DICOM server (in use, supposed to be a clone of fou1)

Data organization

  • DICOM files are stored under the directory /data/dicom
  • Each study is stored under a specific directory whose name is a concatenation of the examination number, the date, and the time. \ E.g. study 38456 performed on July1st 2022 at 13:01:20 will be stored under: /data/dicom/38456_20220701_130120/
  • Inside that directory, one can find all the sequences that have been run.
  • Most often directory 00000001 contains the localizer, 00000002 a calibration. The rest of the directories, 00000003, 00000004 etc, can include structural T1, fMRI, DTI images. fMRI and DTI sequences generate several thousand DICOM files inside a directory.
  • Every morning at 1:00 a.m., any DICOMs that have not yet been transferred from fou2 are automatically copied.