dmri_motion --out './test.txt' --dwi './dwi_orig.nii.gz' --bval './bvals' --mat './dwi.ecclog'

And an error message appears:

machine  x86_64

Output motion measure file: /home/lapsi/test/motion.txt
Input transform file: /home/lapsi/test/dwi.ecclog
Input DWI file: /home/lapsi/test/dwi_orig.nii.gz
Input b-value table: /home/lapsi/test/bvals
Low-b image intensity threshold: 100
Nominal diffusivity: 0.001
Loading volume-to-baseline affine transformations
Computing between-volume head motion measures
INFO: Processed transforms for 33 volumes
Loading DWI volume series from /home/lapsi/test/dwi_orig.nii.gz
Loading b-value table from /home/lapsi/test/bvals
ERROR: Could not open /home/lapsi/test/bvals for reading

I tried with the b-values one value for each line in file bvalsT (see attachments):
dmri_motion --out 'teste.txt' --dwi 'dwi_orig.nii.gz' --bval './bvalsT' --mat 'dwi.ecclog'
,but the same error occurred.

What can I do to verify this head motion?

Thank you

 Best,

--

Liliana Maia
MEng Biomedical Engineering