Then use bbregister on the native-space low-b image to create a
register.dat. Then use mri_label2vol to map the aparc+aseg.mgz to
the native DTI space. Then use mri_binarize to create binary masks
for each of your ROIs.
doug
On 8/12/10 10:52 AM, Lena Palaniyappan wrote:
Re: [Freesurfer] Coordinates for DTI tractography
Doug
I need an analyze file with the two regions I am interested
in each individuals DTI space
The rois are anterior insula and posterior insula from
Destrieux atlas 2009
Cheers
Lena
On 12/08/2010 15:07, "Douglas Greve"
<greve@nmr.mgh.harvard.edu> wrote:
I'm not
sure what it is that you need. Do you need seed
coordinates in the native DTI space of each subject or in
MNI space? If MNI, which one, mni152 or mni305? Do you
need the coordinates in xyz or row,col,slice? Or do you
need your seed region to be a mask (in what space)?
doug
On 8/12/10 8:55 AM, Lena Palaniyappan wrote:
Coordinates for DTI tractography Hi all
I want to use a freesurfer parcellation as a seed point
in DTI analysis using a non-FSL DTI tractography tool.
I have the raw DTI images for around 40 subjects (20
scz 20 controls). From the structural MPRAGEs that
correspond to these subjects, I have an average image
where I have my defined ROI (which is a freesurfer atlas
based parcellation). The ROI has numerous vertices whose
MNI coordinates are available to me.
Please correct me if I have understood this properly
- I have to
process the raw DTI images to obtain FA/trace images
first for each subject
- each FA/trace
image should be registered to the average structural
MPRAGE of the group
-
How do I then go on to obtain
the coordinates for my label on the DTI space?
Many thanks
Lena
_______________________________________________________
Lena Palaniyappan
Clinical Lecturer & Honorary
StR | Division of Psychiatry ( University of Nottingham)
South Block 'A' floor| Queens Medical Centre |
Nottingham | NG7 2UH
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South Block 'A' floor| Queens Medical Centre | Nottingham |
NG7 2UH