I'm not entirely sure what you mean by that, but if you add --no-resample to mri_vol2vol it will not change the pixels at all and just update the geometry info in the header so that it shares an RAS space with the anatomical

On 08/22/2014 04:04 PM, Jackie Lam wrote:

Hello all,

I’m trying to register and transform a functional image to my high resolution anatomical image. As I understand, it can be done with mri_vol2vol, but the resulting functional image is resampled into 1x1x1 voxels (the resolution of my high res anatomical). Is there a way to transform the functional image so that it is in the same space as the anatomical image while retaining its original voxel size?

Many thanks,

Jack

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