Hi Isaac You can use tools like mri_and mri_or to generate results, or use the FSL tools, either way is fine Bruce
-----Original Message----- From: freesurfer-boun...@nmr.mgh.harvard.edu <freesurfer-boun...@nmr.mgh.harvard.edu> On Behalf Of I. Kelleher-Unger Sent: Thursday, September 30, 2021 10:38 AM To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu> Subject: Re: [Freesurfer] Fill between two surfaces External Email - Use Caution External Email - Use Caution Hi Bruce, Thanks for your quick reply! mri_ribbon is exactly what I was looking for! Thanks for your help on that. Ultimately I want to find the overlap between the output of mri_ribbon and an atlas ROI. Is there a tool in freesurfer for this (preferred option to keep within the same ecosystem) or would I be best off using something like fslmaths with the -mas flag? Thanks again for your help! Isaac > On 30 Sep 2021, at 3:19 pm, Fischl, Bruce <bfis...@mgh.harvard.edu> wrote: > > Hi Isaac > > Yes, you can use mris_fill on the two surfaces, then intersect the resulting > volumes. We use the binary mri_ribbon that does this for you, you can try > that out instead if you want. > > Cheers > Bruce > > -----Original Message----- > From: freesurfer-boun...@nmr.mgh.harvard.edu > <freesurfer-boun...@nmr.mgh.harvard.edu> On Behalf Of I. > Kelleher-Unger > Sent: Thursday, September 30, 2021 9:38 AM > To: freesurfer@nmr.mgh.harvard.edu > Subject: [Freesurfer] Fill between two surfaces > > External Email - Use Caution > > External Email - Use Caution > > Hi there, > > Apologies if this is a basic question: I have two surfaces and I would like > to make a ribbon/mask of the area between the surfaces. How could I go about > this? 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