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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
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Thanks! Very good explanation that made things finally very clear to me.
Best wishes
Michael
by
meinternational
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AFNI Message Board
Hi AFNI experts,
there is something which I do not quite understand. How can 3dvolreg return realignment parameters that are smaller than the actual voxel resolution of the scan? Any concept I have overlooked?
Best wishes
Michael
by
meinternational
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AFNI Message Board
Hi AFNI experts,
We run our own bias field correction on the anatomical scans. I use these corrected scans for the afni_proc script and run into the following error.
3dSeg -anat anat_final.001+orig -mask AUTO -classes CSF ; GM ; WM
++ Notice SUMA_estimate_bias_field_Wells (SUMA_SegFunc.c:4713 @16:14:17):
Debug or NAN for voxel 4145 [92 21 0]
Cls CSF, M nan, S nan, Ai 100.689583 (fAse
by
meinternational
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AFNI Message Board
Hi AFNI experts,
I've just read the following part of the afni_proc documentation:
Quote-volreg_align_to POSN : specify the base position for volume reg
e.g. -volreg_align_to last
default: third
This option takes 'first', 'third' or 'last' as a parameter.
It specifies whether the EPI volumes
by
meinternational
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AFNI Message Board