Brain Innovation

GRB creation from a diffusion direction table

Suppose the MR technician has given you a text file with diffusion gradient directions. How to convert it into a grb file?

In the example, we have a direction table which is comma-separated.

1. Open the text file containing the direction table in a text editor:
   
   
2. Open any of the grb files supplied with your BrainVoyager installation in a text editor:
   
3. Save the file under a different name, and delete the gradient table and the number behind "NrOfEntries"
   
4. Copy the diffusion direction table from the text file and paste it into the grb file:
   
5. replace the commas by spaces, by using the Find & Replace function of your editor:
   
6. Add the number of diffusion directions to "NrOfEntries" and we're done.
   

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