Re: [Marsbar-users] rois extraction from rmi

[Matthew B. <mat...@gm...>]

Hi,

On Thu, Nov 3, 2011 at 4:26 AM, francesca
<bil...@gm...> wrote:
> Hi,
> I'm a new user MarsBaR (and SPM), so I apologize if my questions seem too
> trivial.
> I've to do ROIs extraction from many RMI and the ROIs have be boxes with fixed
> dimensions.
> Some boxes should be parallels and some other rotates with respect to image
> axes, as well I need to save their values of gray tone.
> It's possible using MarsBaR? How can I do?

It's fairly easy to do boxes that are parallel to the image axes,
For that you would use the ROI building GUI and specify a box - it's
covered in the tutorial.  It would not be very hard to specify a
non-parallel box either, but it would require some programming, to
find the voxels within the box, and make a voxel-based (maybe points
list) ROI from that.

Best,

Matthew