Hi Rito.

It is not finding information about the gradient table that was used for 
the acquisition. If you have that information you can use the below option 
to manually include it

--b bvals bvecs

If you do not you could try using load_dicom in order to grab that 
information.

Lilla

On Mon, 11 Aug 2014, Ritobrato Datta wrote:

> Hi All,
>
> I ran dt_recon and got the following error. Can someone suggest how to fix 
> this ? I have attached the dwi-infodump.dat file for more information.
>
> Thanks a lot for the help.
>
> Best
>
> Rito
>
> #@#-------------------------------
> Fitting Tensors
> Mon Aug 11 07:29:29 EDT 2014
> cd /Users/iron/rito/VisualMeasures-CHOP/VisionMeasures-003
> mri_glmfit --y 
> /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon/dwi-ec.nii 
> --glmdir /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon 
> --dti 
> /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon/dwi-infodump.dat
>
> $Id: mri_glmfit.c,v 1.196.2.6 2011/05/05 20:54:25 greve Exp $
> cwd /Users/iron/rito/VisualMeasures-CHOP/VisionMeasures-003
> cmdline mri_glmfit --y 
> /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon/dwi-ec.nii 
> --glmdir /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon 
> --dti 
> /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon/dwi-infodump.dat
> sysname  Darwin
> hostname magi-2-balthasar.uphs.upenn.edu
> machine  x86_64
> user     iron
> FixVertexAreaFlag = 1
> UseMaskWithSmoothing     1
> OneSampleGroupMean 0
> y    
> /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon/dwi-ec.nii
> logyflag 1
> X    
> /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon/dwi-infodump.dat
> usedti  1
> glmdir /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon
> IllCondOK 0
> ReScaleX 1
> DoFFx 0
> Creating output directory 
> /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon
> Loading y from 
> /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon/dwi-ec.nii
> Using DTI
> bValue = 1000
> ERROR: cannot extract sWiPMemBlock.alFree[8] from 
> /Applications/freesurfer5.1/subjects/VisionMeasures-003/dtrecon/dwi-infodump.dat
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