AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

History of AFNI updates  

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March 01, 2021 03:02AM
Hi!
We do use the @SSwarper function in our normal fMRI pipeline (yes, it is amazing!). But this is for another project where I just want skull-stripped brains in native space (no non-linear warping) since we want to use them for classification in a 3D CNN. If we use non-linear warping we will potentially lose the differencies between the patient group and HC that we are investigating. This is why we are also using the VBM approach (normalize to template but compensate for the non-linear warp with Jacobians to keep individual differencies).

But step 1 is to use "raw" data, i.e. skull-stripped GM maps in native space. And so far all skull-stripping tools we have used leaves a lot of tissue in the areas that I described. Are we screwed on this? Perhaps without warping or manual segmentation we can't avoid these regions?

Or can SSwarper skull-stripp without warping to template space?

EDIT: Stopped beeing lazy and tested. @SSwarper did indeed an excelent job skull-stripping without the need of warping. Thank you, it looks so nice =)



Edited 1 time(s). Last edit at 03/01/2021 04:58AM by Robin.
Subject Author Posted

3dSkullstrip vs Spine area Attachments

Robin February 25, 2021 06:42AM

Re: 3dSkullstrip vs Spine area

ptaylor February 25, 2021 09:42AM

Re: 3dSkullstrip vs Spine area

Robin March 01, 2021 03:02AM