Dear Freesurfer,
I have two questions.
My first question is about the cortical parcellation. It's possible to make an aparcstats2table for the hemispheres on the paramaters volume, thickness, area and mean curvature. I would like to know the total gray matter volume, because I want to know if I need to correct for it, like we do in volumetry studies. One needs to correct for intracranial brainvolume differences between specific groups. I can't find the total gray matter volume in the aparcstats2table for volume. And I can't figure out how I can destilate it from QDEC.
My second question is about de brainpicture in QDEC. If you have set your threshold and you define a ROI, I would like to know the 'local maximum' in the colored area. (You can set the arrow manually by changing the threshold maximum to a level that the color keeps on changing). But I would like to find a structured and more reliable way. Does anybody know if it's possible?
Thanks a lot.
Kind regards, Maartje Katzenbauer