Hi Jeff,
you are welcome to our source code which has region-growing algorithms in the volume (e.g. for control point detection) and on the surface.
cheers Bruce
On Mon, 16 Aug 2010, Eriksen, Jeffrey (Portland) wrote:
Bruce,
Yes, you are likely correct, but my boss wants to do it this way. Besides, I am going to have other uses for region growing that you might find scientifically acceptable. But the question still stands - does Freesurfer give me access to such a basic tool, or will I have to write my own with Matlab/IDL/C etc.?
Thanks, -Jeff
-----Original Message----- From: Bruce Fischl [mailto:fischl@nmr.mgh.harvard.edu] Sent: Wednesday, August 11, 2010 2:00 PM To: Eriksen, Jeffrey (Portland) Cc: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Freesurfer Digest, Vol 78, Issue 18
Hi Jeff,
we autoamtically segment the cc from an anatomical, which would probably
be a more accurate measure.
cheers Bruce On Tue, 10 Aug 2010, Eriksen, Jeffrey (Portland) wrote:
Sure. Right now I would like to extract the corpus callosum, as
defined
by DTI. After some image arithmetic and thresholding, I have a scalar image of left-right diffusion with values from 0 to 1.2. I would like
to
pick a voxel in the center of the CC and grow a region around it
picking
up voxels in the range 0.9 - 1.2, and only if they share at least two (or some other number of) faces. The result will be an extracted
single
irregular ROI of the CC.
I am more of an EEG person, and have done this with EEG tools like
EMSE
and Brain Voyager.
Thanks, -Jeff