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Preprocessing Steps: GE

This utility is intended for use with GE data.

Convert from Dicom format to DTI format (NIH collaborators)

  1. Download the tarball from the NMRF website.
  2. Untar the data and place all eDTI data series into one folder.
  3. Navigate to the following directory: /raid3/STBBapps/IDL/EDTI/GE
  4. Start idl (by typing 'idl' in a terminal). Then the following commands:
    • IDL> edti_ge
    • 'full path to eDTI directory'
    • 'cdiflist##'

Convert from Dicom format to DTI format (outside users)

  1. Place all series folders and/or files of your DTI dataset into one folder.
  2. Download and save the GE pre-processing tool.
  3. Download and save the gradient files.
  4. Navigate to the location of the GE pre-processing tool. Run IDL from this location, then run the following commands:
    • IDL> restore, 'edti_ge.sav'
    • IDL> edti_ge, 'full path to eDTI directory', 'full path to cdiflist##'
    • 'cdiflist##'
  5. The cdiflist file is the same as the one used for your acquisition. If you do not know what cdiflist file to use, please contact us.
  6. This code will create the .list, .path, and .BMTXT files.

IDL source code of pre-processing tool is available upon request. Please contact Lin-Ching Chang (changlin@mail.nih.gov).