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Many thanks for your quick reply!

I tried your suggestion. I got the error fstal unknown.
So I tried talres 1 instead of fstal 1:

mri_vol2vol --talres 1  --interp nearest --mov example.mgz --s 001.mgz --regheader --o example.mni305.mgz

but got the error that I need to supply a target volume. adding the flag -targ talairach.xfm did not work. How can I add the Talaraich space as target volume for my manual segmentation example.mgz?

Many thanks!

/Ben




Am Mi., 18. Dez. 2019 um 20:19 Uhr schrieb Greve, Douglas N.,Ph.D. <DGREVE@mgh.harvard.edu>:
in this case, I might try mri_vol2vol, something like
mri_vol2vol --fstal 1 --interp nearest --mov example.mgz --s subject
--regheader --o example.mni305.mgz
That is a linear transform. If you want a non-linear, I can walk you
through that too


On 12/18/19 10:13 AM, Benjamin Ineichen wrote:
>
>         External Email - Use Caution
>
> Dear Freesurfer experts,
>
> I have a manual segmentation of a certain brain feature done in
> Freeview. I want to pool these segmentations from different subjects
> to create some kind of a heat map/probability map.
>
> In order to do this, I assume I need to convert my segmentation to a
> volume first (In my case the Talairach space); hence, I tried:
>
> mri_label2vol --seg example.mgz --temp talairach.xfm --o seg_talairach
> --reg example_orig.mgz
>
>
> the example_orig.mgz would correspond to the original T1 which I used
> to do the segmentation.
>
> But this gives me the error message:
>
> ERROR: could not determine type of talairach.xfm
>
> ERROR: reading talairach.xfm header
>
>
> Where is the problem?
>
> Many thanks!
>
> /Ben
>
>
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--
____________________________________
Benjamin Victor Ineichen, MD PhD
Karolinska Institutet
Center for Molecular Medicine
Stockholm, Sweden
+41 76 391 04 01

Dr. med. et Dr. rer. nat. ETH Benjamin Victor Ineichen
Karolinska Institutet
Center for Molecular Medicine
Stockholm, Sweden
+41 76 391 04 01