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