Hi Huifang

sorry, we don't have tools for dividing up the subcortical segmentations. For cortical parcels we find the first eigenvector and divide it along that

cheers Bruce

On Thu, 10 Jan 2019, WANG Huifang wrote:

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Hi Bruce,

Thank you so much for your response.

I would like to divide them into two/three uniformed parts, not considering the subfields.

Now I made some python codes to do it. I am trying to test it with the more datasets now. If you have tools to do it that it will be great for me to compare. Thank you.

Thank you so much,

Looking forward to hearing you,

Best,

Huifang

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De : freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu de la part de Bruce Fischl fischl@nmr.mgh.harvard.edu Envoyé : mercredi 9 janvier 2019 16:25:53 À : Freesurfer support list Objet : Re: [Freesurfer] Subcortical divide parcellation   Hi Huifang

what is your goal? We do have tools that will generate sub-segmentations of some structures (thalamus, amygdala and hippocampus). These are along anatomical lines rather than purely geometric ones.

cheers Bruce

On Wed, 9 Jan 2019, WANG Huifang wrote:

...

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Dear freesurfer experts,

I would like to do subcortical divide parcellation, such as the hippocampus.

By my understanding in freesurfer, the cortical parcellation can be saved as vertices but subcortical parcellation is only saved as volumes.

There are a few ways I can do the cortical divide parcellation, seems do not fit for subcortical parcellation, such as: mris_divide_parcellation.

Can this function also do for the subcortical regions?

Is any other suggestion for this-subcortical divide parcellation?

Thank you so much,

Huifang