Hi Rosalia, Try using the robustfov command. Cheers, Paul On 17 January 2016 at 11:42, Rosalia Dacosta Aguayo <[log in to unmask]> wrote: > Dear FSL experts, > > I have realized that some of my images have too large necks. I have tried > with fslroi....but for me it is being difficult how to define X Y and Z > coordinates with FSLWiew...any help with this would be greatly appreciate. > I had some results with some images but still find difficult how to define > the corners regarding to X, Y and Z... > > Yours sincerely, > > Rosalia. >