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