p.s. sorry, I should have looked at the images first. Everything I said
still applies, but this looks worse than it should. If you put it one our
filedrop I'll take a look
On Wed, 24 Jan 2007, Paul Greenberg wrote:
Hello,
I'm having trouble getting an accurate subcortical segmentation (aseg.mgz,
and aparc+aseg.mgz) in the Left Hemisphere Nucleus Accumbens area of one
subject. Specifically, regions that appear to be the Left Nucleus Accumbens
are being labeled as Left Cerebral Cortex. The two images (attached)
illustrate the problem. Image 1 shows only pial and white matter surfaces on
the "brainmask.mgz" file while image 2 shows the pial and white matter
surfaces on "brainmask.mgz" along with the aparc+aseg.mgz segmentation.
For this subject I added control points to fix other inaccuracies in other
regions, and edited the wm.mgz to cover all regions I considered basal
ganglia (the white matter surface still appears to invade regions of the
basal ganglia). I reprocessed this data with recon-all -autorecon2-cp
-autorecon3, but am still not satisfied with the results. What would you
suggest as the best way to more accurately identify the accumbens regions in
this case?
Thanks much!,
Paul
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