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Sorry I did not explain myself well. What I mean is that for some regions of the brain this is what happens:
Region
lateralorbitofrontal 2969 2085 5489 2.469
lateralorbitofrontal 2969 2085 5173 2.566
________________________________ De: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu en nombre de Douglas N. Greve dgreve@mgh.harvard.edu Enviado: martes, 9 de noviembre de 2021 20:13 Para: freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edu Asunto: Re: [Freesurfer] T1 aparc.stats vs T1 with T2 aparc.stats
In your first post, you said that you were confused as to why the thickness and volume were changing but the surface was not changing. Then you said that the pial surface changed. Does that answer your first question?
On 11/9/2021 1:33 PM, Castro Leal, Gonzalo wrote:
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The time of the aparc.stats is 1h and 20min after the modification of the file pial.T2, and in the case of the T1 only processing the time stamp on the apar.stats is 20 min after the modification of the pial.T1. Does this answer your question or should I look into something else? ________________________________ De: freesurfer-bounces@nmr.mgh.harvard.edumailto:freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edumailto:freesurfer-bounces@nmr.mgh.harvard.edu en nombre de Douglas N. Greve dgreve@mgh.harvard.edumailto:dgreve@mgh.harvard.edu Enviado: martes, 9 de noviembre de 2021 18:09 Para: freesurfer@nmr.mgh.harvard.edumailto:freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edumailto:freesurfer@nmr.mgh.harvard.edu Asunto: Re: [Freesurfer] T1 aparc.stats vs T1 with T2 aparc.stats
Were the stats files regenerated? Check the modification date
On 11/9/2021 10:41 AM, Castro Leal, Gonzalo wrote:
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Yes the pial surface changed and the white did not. ________________________________ De: freesurfer-bounces@nmr.mgh.harvard.edumailto:freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edumailto:freesurfer-bounces@nmr.mgh.harvard.edu en nombre de Douglas N. Greve dgreve@MGH.HARVARD.EDUmailto:dgreve@MGH.HARVARD.EDU Enviado: martes, 9 de noviembre de 2021 14:49 Para: freesurfer@nmr.mgh.harvard.edumailto:freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edumailto:freesurfer@nmr.mgh.harvard.edu Asunto: Re: [Freesurfer] T1 aparc.stats vs T1 with T2 aparc.stats
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The white surface won't change, but the pial surface should change. Can you verify that the pial surface changed?
On 11/9/2021 9:36 AM, Castro Leal, Gonzalo wrote:
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Hello,
I wanted to compare the results of the aparc.stats on the same subjects when only the T1 is used and when T2 is used for pial refinement along with the same T1. To my surprise the tickness increased (on average across regions), the gm volume decreased and the surface didnt change. My questions is how is that the thickness increased and the volume decresed if the surface did not change? (I used freesrufer 7.1.1)
Many thanks, Gonzalo.
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