you can do this with mri_convert:

mri_convert -rl native_volume.mgz -rt nearest apas+head.mgz apas+head.native.mgz


cheers
Bruce

On Mon, 15 Jul 2019, Laboratorio de Neurociencia Funcional wrote:

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Thank you, Doug. The voxel resolution of the apas+head.mgz file is 1mm3.
Would it be possible to obtain the same file but with the native resolution?

Best,
Jose

El lun., 15 jul. 2019 a las 6:01, Greve, Douglas N.,Ph.D.
(<DGREVE@mgh.harvard.edu>) escribió:
      You can try running gtmseg. You will not want its final output,
      but along the way it will  produce a file called apas+head.mgz,
      and this will have a semi-good segmentation of extracerebral
      CSF.


      On 7/12/2019 12:14 PM, Laboratorio de Neurociencia Funcional
      wrote:

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Dear Freesurfer experts,

Is there any way to obtain a CSF mask in Freesurfer similar to that obtained
 with the SPM segmentation (see attached file)? I would need that the CSF ma
sk contains not only the cerebral ventricles but also the extracerebral CSF.

Any help with this would be greatly appreciated.

Best regards, Jose

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