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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, because the structures are not really visible. I could upload two screenshots 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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Universitätsklinikum Hamburg-Eppendorf; Körperschaft des öffentlichen Rechts; Gerichtsstand: Hamburg | http://secure-web.cisco.com/1fL7_mV1HnVXx_pK-xzWgX0hp1IPRmxfnHHvyPV6axEvIN99... Vorstandsmitglieder: Prof. Dr. Burkhard Göke (Vorsitzender), Joachim Prölß, Prof. Dr. Blanche Schwappach-Pignataro, Marya Verdel _____________________________________________________________________

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