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Hi Bruce,

I uploaded a subject's dir via filedrop. Included in the dir is a txt file with coords for 3 example voxels, but here they are again: [155,133,191] [153,150,53] [135,135,174]

Thanks for looking into this.

Best, Catarina

On Sat, May 19, 2018 at 1:24 PM, Bruce Fischl fischl@nmr.mgh.harvard.edu wrote:

Hi Catarina

that is indeed strange. Can you upload one subject (the entire dir) and tell us the voxel coords of one of these points so we can take a look? cheers Bruce On Fri, 18 May 2018, Catarina Saiote wrote:

...

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Hi freesurfer team,

I found in my datasets some scattered voxels with mislabeled hemisphere (see example figures in the attached pdf). I see the labeling error in aparc+aseg and aseg.mgz but aseg.auto and aseg.presurf appear to be labeled correctly.

Also, I see nothing wrong with the surfaces where this is happening but several (if not all) of the mislabeled voxels are right at the white surface.

I found this happening both with V6.0.0 and v6.0.1 for Linux (in both cases using the -hires flag).

This seems to happen to very few scattered voxels and I suppose it probably doesn't quite affect volumes and thickness. But it might matter more if one is using the ROIs to e.g. average functional data. I'd like to know your view on whether it is important to fix this and the best to way to do it.

Thank you in advance, Catarina

-- Catarina Saiote, PhD Postdoctoral Associate Department of Neurosurgery | neurosurgery.umn.edu University of Minnesota | umn.edu csaiote@umn.edu

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