Hi,
I am trying to run dti evaluation of a single slice with DTI fit. I get
no errors but all resulting maps (FA, MD, ...) are all zeros.
I checked the binary mask and recomputed it with
fslmaths <data> -div <data> mask.nii
as previously suggested in this list. The mask.nii file is one everywhere.
The dtifit protocol looks like this:
dtifit --verbose --data=average_data.nii.gz --out=average_spine_dti
--mask=mask.nii --bvecs=bvecs --bvals=bvals
data file average_data.nii.gz
mask file mask.nii
bvecs bvecs
bvals bvals
reading data
reading mask
ok
0 64 0 32 0 1
setting up vols
copying input properties to output volumes
zeroing output volumes
ok
Forming A matrix
starting the fits
0 slices processed
Is it possible that dtifit does not work on single slice data? The slice
is tilted. Is that a problem?
I would appreciate any suggestions.
Cheers,
Sarah
--
Dr. rer. nat. Dipl.-Inform. Sarah Mang
Section Exp. MR of the CNS
Department of Neuroradiology
University of Tuebingen
Hoppe-Seyler-Str. 3
D-72076 Tuebingen
Phone (+49) 7071/29 87753
Fax (+49) 7071/294371
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