Hi - yep this all looks ok.
Can you run
if you ran dtifit from the command line
basename=(whatever you specified as your output basename in dtifit)
if you ran from the GUI:
basename=dti
then..
avwstats nodif_brain_mask -r -R -v -V
avwstats ${basename}_FA -r -R -v -V
avwstats ${basename}_V1 -r -R -v -V
avwinfo ${basename}_FA
and tell me the output
Thanks
Tim
On Fri, 15 Oct 2004, David Brennan wrote:
> Thanks for the suggestion Tim. The output is as follows;
>
> ./data
> dim1 256
> dim2 256
> dim3 23
> dim4 26
> datatype 4
> pixdim1 0.9399999976
> pixdim2 0.9399999976
> pixdim3 6.4000000954
> pixdim4 0.0000000000
> cal_max 0.0000
> cal_min 0.0000
> glmax 8269
> glmin 0
> origin1 0
> origin2 0
> origin3 0
> file_type ANALYZE-7.5
>
> ./nodif
> dim1 256
> dim2 256
> dim3 23
> dim4 1
> datatype 4
> pixdim1 0.9399999976
> pixdim2 0.9399999976
> pixdim3 6.4000000954
> pixdim4 0.0000000000
> cal_max 0.0000
> cal_min 0.0000
> glmax 8269
> glmin 0
> origin1 0
> origin2 0
> origin3 0
> file_type ANALYZE-7.5
>
> ./nodif_brain_mask
> dim1 256
> dim2 256
> dim3 23
> dim4 1
> datatype 4
> pixdim1 0.9399999976
> pixdim2 0.9399999976
> pixdim3 6.4000000954
> pixdim4 0.0000000000
> cal_max 1.0000
> cal_min 0.0000
> glmax 0
> glmin 0
> origin1 0
> origin2 0
> origin3 0
> file_type ANALYZE-7.5
>
> num lines in ./bvals
> 1
> num words in ./bvals
> 26
> num lines in ./bvecs
> 3
> num words in ./bvecs
> 78
>
>
> The only thing that makes me suspicious is the cal_max results. Should these
> be non-zero? There is data there!
>
> Cheers
>
> Dave
>
>
>
> On Thu, 14 Oct 2004 15:51:29 +0100, Tim Behrens <[log in to unmask]> wrote:
>
> >Hiya
> >
> >can you run bedpost_datacheck on the input directory and send us the
> >output please - this should tell you if the problem is an easy one.
> >
> >Tim
> >
>
--
-------------------------------------------------------------------------------
Tim Behrens
Centre for Functional MRI of the Brain
The John Radcliffe Hospital
Headley Way Oxford OX3 9DU
Oxford University
Work 01865 222782
Mobile 07980 884537
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