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Dear Matthew, The details provided above are very helpful. Thank you. Best regards, Mohamad On Tue, Jan 26, 2016 at 6:54 PM, Matthew Webster < [log in to unmask]> wrote: > Hello, > Registering a binary mask to a different space will probably result in > some voxels with fractional intensities using the default interpolation > method. The default kernel is 3x3x3, which will, in conjunction with a > dilation option, result in a dilation with a one voxel extent. > > Kind Regards > Matthew > > > 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 > > > -- Mohammad Reza Khodaei M.Sc. student of Biomedical Engineering, School of medicine, Shahid Beheshti university, Tehran, Iran