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.
There's a description of ROI-drawing tools in this Bootcamp PDF:
[afni.nimh.nih.gov]
See pgs 4ff for the "Draw Dataset" plugin description. You could use this to edit out voxels, or to draw regions that you want to delete using 3dcalc with the data set afterward.