Adding own ROI definitions

Submitted by David on

Hi,

I have got a question about adding my own ROI definitions. I have a list of voxel coordinates in Talairach space and want to tell DPARSF to extract those coordinates. So I used the define ROI option where I can either use a Maskfile or to load ROIs as a mat-file or csv-file. But I have no idea how to generate a Maskfile from my coordinates (which are actually from Brainvoyager) or in what format the mat or csv-file should be.

Hope you can help me out here :)

 

greetings

David

YAN Chao-Gan

Sat, 02/21/2015 - 15:11

Permalink

Hi David,

Please see the below image. You can input 4 columns of number to indicate the coordinates and radius. If you want to define multiple ROIs, just input multiple rows.

Best,

Chao-Gan

Hey,

thanks for the quick answer. I thought about using this option, but my problem is that I have only voxel coordinates and no radius (It's from a Brainvoyager VOI-file). Can I just specify a radius of zero or will this give me an error message?

 

greetings :)

YAN Chao-Gan

Sun, 02/22/2015 - 18:49

Permalink

Hi David,
If you only want one voxel, I will guess a radius of 2 will be good if your voxel size is 3*3*3. You can test and a check.

Best,

Chao-Gan

On Sat, Feb 21, 2015 at 11:04 AM, The R-fMRI Network <rfmri.org@gmail.com> wrote:
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Commented by David (David)

Hey,

thanks for the quick answer. I thought about using this option, but my problem is that I have only voxel coordinates and no radius (It's from a Brainvoyager VOI-file). Can I just specify a radius of zero or will this give me an error message?

 

greetings :)


Online version of this post: http://rfmri.org/comment/3538#comment-3538


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