I had forgot to binaries my mask. I didn't know that after registering a binary mask to an other space its not binary any more.

Does the default kernel dilate the mask by one voxel?

Best,

Mohamad

On Mon, Jan 25, 2016 at 6:56 PM, mohamad reza khodaei <[log in to unmask]> wrote:

Thanks for your response.

you used the command below?

fslmaths    roi.nii.gz        -kernel 3D     -dilM      dilateROI.nii.gz

For me, it create an output which is exactly the same with the input!

I want my ROI to be dilated by one voxel.

Best,

Mohamad

On Mon, Jan 25, 2016 at 4:34 PM, Matthew Webster <[log in to unmask]> wrote:

Hello,

          The command below worked for me on a test image - how does it fail on your data?

Kind Regards

Matthew

Thanks for your response

I tried -dilM but it didn't worked, which kernel should i use to have dilation by 1 voxel?

i tried:

fslmaths    roi.nii.gz        -kernel 3D     -dilM      dilateROI.nii.gz

any idea?

best 

mohamad

On Tue, Jan 19, 2016 at 8:30 PM, Matthew Webster <[log in to unmask]> wrote:

Hello,
        fslmaths with one of the -dilM,-dilD,-dilF options should do the job.

Kind Regards
Matthew

> Dear experts,
>
> How can i dilate a ROI by one voxel?
>
> Best regards

--

Mohammad Reza Khodaei
M.Sc. student of Biomedical Engineering,
School of medicine, 
Shahid Beheshti university,
Tehran, Iran

--

Mohammad Reza Khodaei
M.Sc. student of Biomedical Engineering,
School of medicine, 
Shahid Beheshti university,
Tehran, Iran

--

Mohammad Reza Khodaei
M.Sc. student of Biomedical Engineering,
School of medicine, 
Shahid Beheshti university,
Tehran, Iran