Hi Jeff,
this might be a case for the Volumes toolbox (you will find it on the
SPM extensions page) and particularly the extract data options there
(either in a CheckReg context menu, or even in batch mode).
Volkmar
On Tue, 2007-11-27 at 11:53 -0500, Jeff Browndyke wrote:
> I'm hoping some of the wise and experienced folk around here know of a method by which you can extract ROI summary values, such as the number of voxel above a threshold, from a results image that is not an SPM con image.
>
> Essentially, I have z-score converted results images for each subject, as well as manual ROIs that I would like to use as inclusive masks (binary analyze images of particular regions) and extract the number of voxels with z-score above a certain threshold. The z-score converted image is not a SPM .con image and is not directly associated with an SPM.mat. I would like to obtain the following and would be willing to adopt any method to get these:
>
> 1.) number of voxel in the ROI
> 2.) number of suprathreshold (z-score) voxels within ROI mask
>
> I thought about Marsbar, but it's my understanding that this would require my running a typical SPM analysis. That's my problem. I already have my results in the form of these individual z-score images and running a typical analysis or SPM.mat file to obtain these values will not work. Just looking for a simple binary analyze image mask application to results image process that will give me the values above...any thoughts on how to do this?
>
> Thanks to all,
> Jeff Browndyke
--
Volkmar Glauche
Freiburg Brain Imaging
http://fbi.uniklinik-freiburg.de/
Phone +49(0)761 270-5331
Fax +49(0)761 270-5416
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