Just to clarify, at each point means at each same-numbered node in
the mesh for the white and pial surfaces. (Right?)
What has never been clear to me is, in what sense are the same-
numbered nodes in those two meshes the same point? Is this accepted
as a convenient convention based on the
Is there a way to query an installation of freesurfer to determine
what version platform it came from? Just curious...
looking forward to trying out 4.0!
--
-dave
Pseudo-colored pictures of a person's brain lighting up are
Yikes, just found the answer to this from a couple of days back.
Sorry! Thanks Nick!
On Aug 27, 2007, at 9:10 PM, David Perlman wrote:
Is there a way to query an installation of freesurfer to determine
what version platform it came from? Just curious...
looking forward to trying out
I am no expert, but if I may make a small suggestion based on the
image you have provided? I don't know exactly what you're comparing
in your VBM, but if indeed there is on average a difference in
*shape* of the cortex between the groups you are comparing, then it
is not at all surprising
On this topic, if I *don't* want subcortical segmentation, but rather
only surface generation and thickness maps, what's the best option to
use for that? It seems like it might be -noaseg, but I couldn't find
any references to this flag being used with human data, only with non-
human
On May 14, 2007, at 6:28 PM, Juranek, Jenifer wrote:
I’m interested in parsing aseg.mgz into separate binary mask files
for each aseg label. Is this possible? The closest topic I found
was located at the following URL:
...
I checked the following for additional help…but still need some
I wonder if I've reached my new-user quota of questions yet?
My brand-new installation of Freesurfer doesn't seem to have the -
long option available on recon-all described in Xiao Han's page on
the wiki. Is this referring to a beta version of recon-all?
thanks...
--
OK, so if you load in an mgh file containing (say) thickness data,
you'll get a mri struct where mri.vol is Nx1x1 where N is the number
of vertices. So far so good. How is the data structured if you load
in an mgh file containing surface normals?
On May 7, 2007, at 5:31 PM, Doug Greve
I think I must be misunderstanding something about the way
mri_surf2surf works. I thought it was supposed to resample onto the
target mesh, which I would think would mean that resampling two
different data files onto the same target mesh would give outputs
with the same numbers of nodes.
Hmm, and then in Matlab it would be:
datastruct=MRIread('t7tot1-lh.thickness.mgh');
datavol=datastruct.vol;
data=datavol(:,1,1,1);
except that it might be reshaped so if I want to read surface data
in mgh format I have to check for reshaping and then un-reshape it as
necessary... there
Forgive me if I'm simply missing the obvious, but as far as I can
tell, mri_surf2surf is not capable of writing output in *any* of the
surface formats listed in the Freesurfer surface formats document on
the wiki, except .w paint format. Also, mris_convert doesn't
accept .w as input; so
On Sat, 5 May 2007, David Perlman wrote:
Is there a way to re-do the generation of the ribbon but
generate it with a
smaller voxel size? I've already had success resampling the
T1.mgz to 0.25mm
and using it as a template for mri_surf2vol with --mkmask and --
fillribbon,
but the problem
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