Hi Everyone,
I'm new to freesurfer so I apologize if my question has already been answered previously (I searched the list archive and the website and couldn't find an answer). I would like to make functionally defined ROIs for each of my subjects based on a localizer I used. I would like to select several ROIs from one contrast. I have done that by simply drawing the ROI on the significant voxels using the "select voxels tool" and saving that out as a label. This process is rather painstaking though, and I was wondering if there was an easier way to do this- perhaps by selecting an entire cluster of voxels at once and saving that out to a label? If anyone has figured out a more efficient way to do this I would appreciate it. Thanks!
-Alice
Alice, You might find this tutorial helpful: https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/MultiModalFmriIndividua...
and mri_volcluster or mri_surfcluster
Allison
As Allison says, you can use the tools listed below. Alternatively, there is an easier way to do it in tksurfer.
1. Click on cluster you want to convert into a label. 2. Click on the "Custom Fill" button (little paint bucket pouring into a blue blob). This will popup a window 3. Click on the "Up to functional values below threshold" box, then "Fill". The cluster will temporarily turn white, then it will have a yellow border. You have just created a "label". 4. Save this label using the File menu.
doug
Allison Stevens wrote:
Alice, You might find this tutorial helpful: https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/MultiModalFmriIndividua...
and mri_volcluster or mri_surfcluster
Allison
freesurfer@nmr.mgh.harvard.edu
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Alice Albrecht -
Allison Stevens -
Douglas N Greve