NITRC: BrainNet Viewer: help

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ROI Drawing

Dear all,

I am trying to visualise a nifti volume on a smooth surface with the aim of showing the ROIs on an opaque brain as shown on the manual. However, every time I click on ROI drawing, all I get are these huge boxes of ROIs drawn for each voxel. Any suggestions?

Thanks

Deniz

RE: ROI Drawing

Hi Deniz,

To use the ROI drawing, please set the voxels within then same ROI with same value, then input this value in the panel. Could you please provide the pictures or the volume files so that we can know the details.

Best,
Mingrui

RE: ROI Drawing

Dear Mingrui,

Thank you very much for your reply. I believe that's exactly the information I am missing. How do I set the voxels in the same ROI to have the same value? What do I use? Any help would be much appreciated.

Best,

Deniz

RE: ROI Drawing

Hi Deniz,

Try following codes:

hdr = spm_vol('filename.nii');
vol = spm_read_vols(hdr);
vol(vol == n) = t; %set ROI n with value t.
hdr.fname = 'newfilename.nii';
spm_write_vol(hdr,vol);