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  

|
August 12, 2021 09:56AM
This is a fairly complicated topic really. Regarding the specific questions of atrophy measures, there are a few possibilities:

1. CSF probability. Using probabilistic segmentation from a program like 3dSeg or similar, you can generate probabilities of different tissue classes. Gray matter probability is another option here.

2. Deformation to a normal template with Jacobian to get a compression/expansion type metric.
[afni.nimh.nih.gov]

I have more thoughts on this, but it's a bit much for a message board post.
Subject Author Posted

Atrophy measure suggestion

LuisaBoh July 30, 2021 03:44PM

Re: Atrophy measure suggestion

Daniel Glen August 12, 2021 09:56AM