Hi Jed,
I'm guessing this is the dataset we looked at a couple of weeks ago,
when I was there for the fMRI course. I vaguely recall translating the
surface and saving the resulting coord file by a different name (e.g.,
fiducial_ACorigin or fiducial_orig). Do "ls *coord |grep -i fiducial"
in your directory to see all the fiducial coord files. Make sure you're
mapping the volume to that fiducial surface. If you still are having
trouble, then put all the relevant files in a zip archive and upload here:
http://pulvinar.wustl.edu/cgi-bin/upload.cgi
It's amazing how quickly these details disappear from memory, but it
seems like it was either a deal where you generated the surface using
SureFit, which puts the origin at the cropped bounding box lower left
corner, or the origin of the volume used to generate the surface (with
which the functional now aligns) was translated off the AC.
Donna
On 06/19/2007 04:43 PM, John Harwell wrote:
Jed,
First, make sure you are mapping the functional volume to the 3D
fiducial surface.
Second, both the anatomical and functional volumes must be in the same
stereotaxic space. Load the anatomical and functional volumes into
Caret and verify that the functional data properly overlays the
anatomical data. In addition, if you load your 3D surface into Caret,
there is an option on the Overlay/Underlay-Volume Settings page that
allows the display of the 3D surface where it intersects the displayed
volume slice.
----------------------------------------------------------
John Harwell
[EMAIL PROTECTED]
314-362-3467
Department of Anatomy and Neurobiology
Washington University School of Medicine
660 S. Euclid Ave. Box 8108
St. Louis, MO 63110 USA
On Jun 19, 2007, at 4:31 PM, Jed Mathis wrote:
We have a flat map of an occipital lobe and are trying to map a
functional
dataset onto it. I've tried using the Map Volume to Surface command
and it
does map the data set on but it appears to be off in the Anterior to
Posterior Direction.
The spgr used for the flatmap is from the same exam used to collect the
functional dataset. Anything in particular I need to do to the
functional
dataset before trying to align to the flat map?
Thanks
Jed
