[Mristudio-users] b-matrix from dicom header and from techs

susumu mori susumu at mri.jhu.edu
Tue Jul 20 06:11:02 EDT 2010


Hi Venkateswaran,

I think Hangyi can answer some of the questions, but few comments here;


2) When i use dcm2nii to extract gradient table information for these older
> software versions it is mentioned by Chris Rorden that he appropriately
> rotates these gradient tables to conform to NIFTI format (since dicom and
> NIFTI coordinates are different).  I am using FSL for eddy/motion correction
> and also to rotate bvec after eddy/motion correction. I however convert
> NIFTI to Analyze format and then to dti "raw" format and do tensor
> calculation so i am wondering whether this "raw"format has same coordinates
> as NIFTI.
>

I believe the coordinate definition is related to the header, but the "raw"
format doesn't have header. So, except for the order of the matrix, there
should not be difference between NIFTI and raw for the image matrix section.


>
> 3) Do you have  an option in DTIstudio to open NIFTI files.
>

The current DtiStudio can read NIFTI but I don't think it can extract
gradient information in NIFTI.
I'm wondering why you are using NIFTI, not the original DICOM (or MOSAIC)
files. If you could orient us in this respect, we may put some effort in
supporting header structures other than DICOM in terms of the gradient table
information.

>
> 4) Last one When i try to run DTIstudio-latest-x86.exe it gives me the
> following error "This application failed to start because the application
> configuration is incorrect. Reinstalling the application may fix this
> problem". Any help on this would be greatly appreciated.
>

Is it a reproducible problem?


>
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