Hi Lars,

I had the same problem. You can notice in your bvec file that there are some unusual blank spaces sometimes. Try to look at each space between two numbers and make sure it’s fine. You can also make sure about the number of entries by running wc -w on each of your bvec or bval file. Hope it’s gonna help you.

Cheers,

Ismail

On Jul 2, 2016, at 4:27 AM, Lars M. Rimol larilin@gmail.com wrote:

Hi,

Trying to run trac-all -c dmric_file -prep, I get an error message stating that there are different numbers of entries in the bval and bvec files. I don't understand why, since both have the same number of rows (64).

OS = Ubuntu 14.04.4 Software: freesurfer-Linux-centos6_x86_64-stable-pub-v5.3.0; I have updated Tracula and FSL (v 5.0.9).

Error message:

#@# Tensor fit fr. 01. juli 19:20:29 +0200 2016 dtifit -k /media/lmr2/subjects/DTI/tracula_2016/4_FS/dmri/dwi.nii.gz -m /media/lmr2/subjects/DTI/tracula_2016/4_FS/dlabel/diff/aparc+aseg_mask.bbr.nii.gz -r /media/lmr2/subjects/DTI/tracula_2016/4_FS/dmri/bvecs -b /media/lmr2/subjects/DTI/tracula_2016/4_FS/dmri/bvals -o /media/lmr2/subjects/DTI/tracula_2016/4_FS/dmri/dtifit Error: bvecs and bvals don't have the same number of entries Linux dmed4870 3.19.0-31-generic #36~14.04.1-Ubuntu SMP Thu Oct 8 10:21:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

trac-preproc exited with ERRORS at fr. 01. juli 19:20:30 +0200 2016

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I also tried flipping the bvec/bval files, but got the same error. I don't know if there's anything wrong with the bval/bvec files, or if this error message is indicative of some other problem. Is the updated Tracula version only compatible with the dev version of FS?

I have attached the bval/bvec files and the trac-all.log.

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The contents of the dmric file is:

setenv SUBJECTS_DIR /media/lmr2/subjects/DTI set dtroot = /media/lmr2/subjects/DTI/tracula_2016_nativerows set subjlist = (4_FS) set dcmroot = /media/lmr2/subjects/DTI set dcmlist = ( 4/5/1.dcm ) set bvalfile = /media/lmr2/subjects/DTI/bvals_rows.csv set bvecfile = /media/lmr2/subjects/DTI/bvec_rows.csv

Thank you!

yours,

Lars M. Rimol, PhD Senior researcher, Norwegian Advisory Unit for functional MRI Department of Radiology, St. Olav's University hospital, 7006 Trondheim, Norway

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