It's looking for the values in the dicom file (which apparently does not have them). Convert the dicom to nifit, then use the nifti as input, then pass files with bvals and bvects on the command line. doug

Antonella Kis wrote:

Dear Bruce:

I am running the dt_recon: # setenv FREESURFER_HOME /usr/local/freesurfer # setenv SUBJECTS_DIR $FREESURFER_HOME # cd /usr/local/freesurfer/NPI001 # dt_recon --i /usr/local/freesurfer/NPI001/dti/1.3.46.670589.11.17385.5.0.7524.2009112812454960001.dcm --s /usr/local/freesurfer/NPI001 --o /usr/local/freesurfer/NPI001/dti

and I am getting the following error:

ERROR: cannot extract sDiffusion.alBValue[1] from /usr/local/freesurfer/NPI001/dti/dwi-infodump.dat

Can you please give me a hint?

Thank you. AK

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