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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June 26, 2017 02:15PM
Hello,

To add details to Peter's request, what is the output from this?

3dinfo -slice_timing run_1+orig


Using an MB acquisition should not really matter here. Perhaps
FSL does not support it is because of the limiting nature of the
NIFTI header, which is not capable of storing general slice timing
information, it just uses codes for a few known timing patters.


I do not see what artifacts you are alluding to in the image,
though there is a single red dot, which is odd. Note that we
generally avoid Fourier interpolation (for almost anything).
Though it can make nice results and is elegant, any spikes can
cause ringing artifacts.

By default afni_proc.py uses -quintic interpolation, so spikes
cannot spread far.


Can you provide any clarity regarding the artifacts? Note that
striping is common when motion occurs, with or without 3dTshift.

- rick
Subject Author Posted

Slice timing correction multi-band data 3dTshift Attachments

jashaj June 23, 2017 03:15PM

Re: Slice timing correction multi-band data 3dTshift

Peter Molfese June 25, 2017 10:04PM

Re: Slice timing correction multi-band data 3dTshift

rick reynolds June 26, 2017 02:15PM

Re: Slice timing correction multi-band data 3dTshift Attachments

jashaj June 26, 2017 04:40PM

Re: Slice timing correction multi-band data 3dTshift

rick reynolds June 28, 2017 10:23AM

Re: Slice timing correction multi-band data 3dTshift Attachments

jashaj June 28, 2017 11:29AM

Re: Slice timing correction multi-band data 3dTshift

rick reynolds June 28, 2017 12:50PM

Re: Slice timing correction multi-band data 3dTshift

jashaj June 30, 2017 12:23PM