[caret-users] Questions about draw border update and filling in border areas

[Donna Dierker]

Hi Michelle,

Okay, you're drawing contours in VOLUME view.  This won't work, as far 
as I know.  Borders only work on surfaces (I think!).

When we want to do what you are trying to do, we use Volume: 
Segmentation: Edit Voxels to paint voxels on or off.

But there are a couple of tools I feel compelled to mention:

* Freesurfer does an automated parcellation of the subcortical regions.  
These can be imported into Caret.

* Mayo's Analyze software has some tools that do auto edge detection, 
that can be helpful in generating slice contours.

If you are "segmenting" just parts of the subcortical structures, then 
you can use Volume: Segmentation: Edit Voxels to do that.  Sometimes it 
can be helpful to start with something close (e.g., Freesurfer 
parcellation), and then edit voxels off at the margins.

Donna

On 06/11/2009 11:38 AM, mleisenb at artsci.wustl.edu wrote:
> Hi,
>
> I tried your suggestion for the draw border update function, but it is
> still not allowing me to update borders I have drawn on volume views of
> the brain (however, when I tested it on surface views I was able to get it
> to work).  Is this function usable on volume views of the brain?
>
> I'm sorry I wasn't very clear about what we are trying to trace.  We are
> trying to trace volumes of subcortical areas, not surfaces.  I would like
> to be able to trace specific subcortical regions in each brain slice so
> that I can, in effect, trace the volume of the structure.  Is there a
> method other than draw borders that should be used to do this?
>
> Thank you.
>
> Michelle
>