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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September 29, 2021 03:50PM
Hi Jenna,

The 6s TR seems too long (unless this is for an auditory study).
And while we don't really recommend band passing, if you are going to do it, the TR should be correct.

We ran into a case (I think in ADNI, but am not positive) where the AFNI extension in the NIFTI header was made with a mistake, while the NIFTI header itself was okay. Maybe that applies here.

For one of the DSET.nii EPI datasets, what is the output of these 2 commands?

nifti_tool -disp_hdr -field pixdim -infiles DSET.nii
3dinfo -tr DSET.nii

If they disagree and the NIFTI header says 3s, then yes, go with that.

What do those commands show?

- rick
Subject Author Posted

Discrepancy of repetition time between dicom and nifti header

jkblujus September 27, 2021 06:34PM

Re: Discrepancy of repetition time between dicom and nifti header

Daniel Glen September 28, 2021 12:46PM

Re: Discrepancy of repetition time between dicom and nifti header

jkblujus September 28, 2021 05:55PM

Re: Discrepancy of repetition time between dicom and nifti header

rick reynolds September 28, 2021 06:48PM

Re: Discrepancy of repetition time between dicom and nifti header

jkblujus September 29, 2021 12:10PM

Re: Discrepancy of repetition time between dicom and nifti header

rick reynolds September 29, 2021 03:50PM

Re: Discrepancy of repetition time between dicom and nifti header

jkblujus September 29, 2021 04:02PM

Re: Discrepancy of repetition time between dicom and nifti header

Daniel Glen October 04, 2021 01:59PM

Re: Discrepancy of repetition time between dicom and nifti header

Daniel Glen October 05, 2021 10:20AM