Concatenating DWIs

TORTOISE Message Board
1

Excited about v4!

I have two blip_up runs that I'd like to concatenate prior to running TORTOISEProcess.

I noticed that there's a CombineDWIs utility, but it throws a "boost::filesystem::create_directories: Invalid argument" error.

Is there a preferred way to concatenate runs?

Thanks,
Eric

2

Hello,

CombineDWIs and CombineDWIsWithBMatrix are indeed the right way to combine data The first one is for data with bvecs/bvals.

That boost error might happen because of several reasons.

  1. You might not have permission to create folders in that current folder layout.
  2. Boost used to have a bug that made it crash when running in temporary filesystems, which are the common filesystems in clusters. I thought this was fixed but maybe not.
  3. Try the following and let me know if it works. Copy the nifti files and their corresponding bvecs/bvals into a single folder and run it from there without giving a folder name, such as:

cd myfolder_containing_alldata
CombineDWIsWithBMatrix myoutput.nii myDWI1.nii myDWI2.nii

just filenames, no folders. Let me know. If this doesnt work, try with FULL paths and let me know.

3

Thanks-- does not seem to be a permissions issue. The same error occurs whether given full paths or local paths.