Hi Trina,

each volume should have a vox2ras (and ras2vox) matrix that you can extract with mri_info. The combination of ras2vox_vol1 * vox2ras_vol2 will take you from vol2 voxel coords to vol 1 voxel coords.

cheers, Bruce

On Wed, 4 Apr 2007, Trina Kok wrote:

Hi all,

I have a question on matching slice location between dicoms and the freesurfer output. I have a set of 120 dicom files and I ran it through the autorecon process in freesurfer. From the viewer with tkmedit, there are 180 files (slice 218 to 39 in trans view) that corresponded to scanning, i.e. with some image scanned. I think the rest of the 256 slices are interpolations, but how does the 180 slices map to the 120 dicom files? I'm asking because I am trying to map a dicom file with a specific slice location to the .mgz images.

Thank you.

Regards, Trina _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer