The subcortical GM structures are obtained from the whole brain
segmentation (Fischl, Neuron, 2002). The segmentation of the WM is
performed by taking the label of the closest point on cortex (Salat,
Neuroimage, 2009)
On 2/1/2021 1:52 PM, Graterol Pérez, José Alberto wrote:
External Email - Use Caution
Dear FreeSurfer experts,
I need help trying to understand how the white matter gets
parcellated. I have a clinical dataset, which means that the
resolution is not as research images, but it ran without a problem. I
would like to measure the volume of the basal ganglia and looking at
wmparc.mgz I am not sure how Freesurfer decides where a structure ends
and the other one begins. I am attaching two images to show what I mean.
I would really appreciate some clarification. I am using FreeSurfer 7.1.1
Thanks in advance.
José
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