Ged,
Thank you for the page within the flirt/fugue slides.
If I can narrow the question down with the following specs:
I create an MNI152 brain by isotropically resampling avg152T1_brain (from
${FSLDIR}/etc/standard), using flirt, from 2x2x2 to 1x1x1 mm^3 voxels. The
resulting image is 182x216x182 mm^3 voxels.
Is there a specific coordinate in this MNI152 brain that is considered the
standard "center coordinate"?
The context of my question is with regards to TBSS. I have run tbss on a
series of FA images, and I currently have a mean_FA_skeleton
affine-registered to the aforementioned MNI152 brain.
Suppose I am interested in a voxel in the skeleton at (104,125,104) as
viewed with fslview. Although the affine registration of the skeleton is but
a close approximation of the MNI152 morphology, I would like to know what
are the nearby anatomical structures at or nearby (104,125,104).
Since my coordinates are in "voxel space", they are not the correct ones I
would use as input to find the corresponding structures in an MNI152 atlas.
Is there a straightforward way I could translate this particular coordinate
into the "atlas space"?
I don't know if I have merely restated my previous post, but I hope that the
context of my question may help in answering it or pointing me in the right
direction.
Regards,
Robert Terwilliger
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