[Freesurfer] TRACULA - tract volume and length

2013-06-19 Thread Fred Sanders
Dear DTI experts, I am trying to understand how to interpret tract length & volume measurements that TRACULA provides. For example, let’s say a clinical population differs from a control group in mean FA of a particular tract, and tract length & volume are comparable across the 2 groups. I think

[Freesurfer] surface morphology

2013-02-08 Thread Fred Sanders
Hi All, Is there an approach within freesurfer (or related software) for examining surface morphology of subcortical structures? WIth freesurfer I'm able to examine the total volume of various subcortical structures, but if my participants differ in volume of a subcortical structure, I can't dete

[Freesurfer] subcortical gray matter volumes

2012-08-01 Thread Fred Sanders
Hi All, Two questions: 1. I am interested in subcortical gray matter volumes such as hippocampus, amygdala, & basal ganglia. Can someone recommend some good references looking at the accuracy of Freesurfer relative to the "gold standard" approach of hand-tracing these structures? 2. Most of the