These atlases are in deed in standard space (MNI, not Talairach; for they are not the same).
As far as I know, different atlases define borders of areas differently, so they may overlap each other. However, for they are probabilistic atlases, the extnet of areas (and therefore that of overlaps) depend ont the threshold you are planning to use.
On the other hand, if you use FeatQuery:
"Featquery will automatically detect which space this mask is in (standard-space, highres-space or lowres-space - patient's) and will transform it into the native lowres space of example_func; of course this can only work if FEAT registration was setup and carried out."
If you want to transform atlases/masks manually, be aware of the noninteger values in the resulted registered mask! You may probably need to binarize them after registration.
Auer, Tibor M.D. Ph.D.
Biomedizinische NMR Forschungs GmbH
am Max-Planck Institut für Biophysikalische Chemie Am Fassberg 11
Mail: [log in to unmask]
From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf Of Gabor Perlaki
Sent: Monday, May 17, 2010 10:18 AM
To: [log in to unmask]
Subject: [FSL] Atlases
I'd like to use some masks from different atlases (for instance: Insula from MNI Structural Atlas, Left Thalamus from Harvard-Oxford Subcortical Atlas, etc.). I'd like to use these masks in the patients' spaces, so I need to transform them. Are all these atlases (Cereblar Atlas in MNI152, Harvard-Oxford Cortical, JHU White-Matter etc.) in the same space (Talairach)? If I register the example_func to MNI152_T1_2mm_brain, is it correct to use the standard2example_func.mat to transform the regions of any atlases (which are in FeatQuery) to the patient's space? Do these atlases overlap each other?
Thanks a lot,
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