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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November 27, 2008 11:54AM
Ringing artifacts are inescapable in any interpolation scheme that is (1) more that linear in space, and (2) linear in the voxel values. The particular shape of the ringing artifacts depends on the interpolation method used. The real question is the size of these artifacts relative to the noise in the images. If they are small, then the artifacts are nothing to worry about.
Subject Author Posted

ringing artifact

Jatin Vaidya November 26, 2008 01:30PM

Re: ringing artifact

bob cox November 27, 2008 11:54AM

Re: ringing artifact

Jatin December 01, 2008 11:55AM