Hi - (happy new year) Caret has a nice feature that lets you drop paints from a surface into a volume.
but one thing is that all it really allows is for one to specifiy a distance above and below the suface. So, it does not allow one to fill the gray matter of a volume with paint accurately. But, I can fill the gray or white matter accurately by having a pial or white surface (from freesurfer), turning them into segmentations and subtracting one from the other. Or, wisely avoiding freesurfer, I could make a segmentation of the entire volume (threshold to segmentation), shrink a midthickness surface made with surefit so it pretty much fits the WM and subtract a segmentation of that from the volume segmentation. So, is there a way, could there be a way, might there one day be a way of moving paint data from surface to volume using a segmentation (derived from wherever) as a template, so that the entire cortical thickness is labelled by the paint volume, and accounting for thickness variation? this would be pretty handy. I could see it helping lots of things (for example the scabalebrainatlas). since I have a mask/segmentation of gray matter maybe there's a trick that I could use to accomplish this right now? All I can think of is to use the white, mid and pial surfaces I have (and maybe 2 more surfaces, the average of white and mid and of pial and mid), make paint volumes and OR them all togther. best for 2012.
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