Hi Doug, the Choi volume is in MNI152 space, not MNI305 space.

Hi Kathy, the correct command is "mri_vol2vol --mov $input --targ
$FSLDIR/data/standard/MNI152_T1_2mm_brain.nii.gz --regheader --o
output1.nii.gz --no-save-reg --interp nearest"

Please note the use of the "--regheader" flag. The Choi volume is in
exactly the SAME space as the
$FSLDIR/data/standard/MNI152_T1_2mm_brain.nii.gz, it's just that the
header information is different. Therefore the "regheader" flag takes
care of that.

--Thomas

On Mon, Nov 11, 2013 at 7:40 PM, Douglas Greve
<gr...@nmr.mgh.harvard.edu> wrote:
>
> Is the Choi2012 volume in fsaverage/mni305 space? If so, then the 2nd
> command is the right one. Use mri_binarize with the --match option to
> create separate masks.
> doug
>
>
> On 11/11/13 2:24 PM, Kathy L. Pearson wrote:
>> To convert an example Choi2012 file to FSL 2mm space in FreeSurfer 5.2, I 
>> have tried both of the mri_vol2vol commands below.  The results as shown in 
>> freeview are offset by several voxels from the original.  Is there a 
>> transform or an intermediate step that can make this work -- or a different 
>> command?  Also, is there a recommended way to extract each individual value 
>> (here 1 ... 7) to create separate masks in FSL 2mm space?
>>
>> Thanks for any advice,
>>
>> Kathy Pearson
>>
>> #!/bin/bash
>> input=$FREESURFER_HOME/average/Choi_JNeurophysiol12_MNI152/Choi2012_7Networks_MNI152_FreeSurferConformed1mm_TightMask.nii.gz
>> mri_vol2vol --mov $input --targ 
>> $FSLDIR/data/standard/MNI152_T1_2mm_brain.nii.gz --reg 
>> $FREESURFER_HOME/subjects/fsaverage/mri.2mm/reg.2mm.mni152.dat --o 
>> output1.nii.gz --no-save-reg --interp nearest --precision uchar
>> mri_vol2vol --targ $input --mov 
>> $FSLDIR/data/standard/MNI152_T1_2mm_brain.nii.gz --inv --reg 
>> $FREESURFER_HOME/average/mni152.register.dat --o output2.nii.gz 
>> --no-save-reg --interp nearest --precision uchar
>>
>> # Compare results
>> freeview $input output1.nii.gz output2.nii.gz&
>>
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