Re: [Freesurfer] Automated extraction of dural/meningeal ROI

2025-02-03 Thread Douglas N. Greve
In that post, I'm not saying that we have a meninges segmentation, just that the meninges might be removed when doing skull stripping. This will not remove the signal from meninges that has partial-volumed into the brain. We don't have a way to do that unless there is a meningeal ROI. On 1/30/

[Freesurfer] Automated extraction of dural/meningeal ROI

2025-01-30 Thread Sneha Pandya
External Email - Use Caution Dear Doug, We are working on PET images and our tracer has a lot of non-specific binding close to meninges. To do so we want to be able to mask out meninges and other areas outside the brain. Following up on your suggestion as in https://secure-web.

Re: [Freesurfer] Automated extraction of dural/meningeal ROI?

2017-03-06 Thread Antonin Skoch
Dear Daniel, For the "outer" boundary of your ROI, I would try the betsurf from FSL for the inner skull surface estimation. This should be more precise than using brainmask.mgz. https://fsl.fmrib.ox.ac.uk/fsl/fslwiki/BET/UserGuide Antonin You could remove the brain (as found in aseg.mgz) from

Re: [Freesurfer] Automated extraction of dural/meningeal ROI?

2017-03-06 Thread Douglas N Greve
You could remove the brain (as found in aseg.mgz) from the brainmask.mgz. This will leave some dura. It is not an elegant or accurate solution On 03/06/2017 02:24 PM, Albrecht, Daniel S. wrote: > Hello, > > We have a PET dataset where we expect to see pathogenic changes in the > meninges. We'd

[Freesurfer] Automated extraction of dural/meningeal ROI?

2017-03-06 Thread Albrecht, Daniel S.
Hello, We have a PET dataset where we expect to see pathogenic changes in the meninges. We'd like to extract the meningeal signal in subject space, and were hoping to come up with an automated strategy to create meningeal ROIs, containing no brain or scalp. So my question is: can you suggest an