Check out the docs here:
http://spnl.stanford.edu/tools/ArtRepair/ArtRepair.htm#documentation
With this software, you can exclude particular scans. I believe it is
suggested that you do this after estimation (it will create a new design
matrix and re-estimate).
Julie McEntee wrote:
> Hi all,
>
> I am preprocessing fMRI data using SPM5. In the process of running
> Realign: Estimate & Reslice with the following parameters:
>
> Estimation options:
> Quality -> 1
> Separation -> 4 Smoothing (FWHM) -> 5 Num Passes -> Register to mean
> Interpretation -> 7th Degree B-Spline
> Wrapping -> No wrap Weighting -> <None>
> Reslice options:
> Resliced Images -> Mean Image Only
> Interpolation -> 7th Degree B-Spline
> Wrapping -> No wrap Masking -> Mask images
>
> some subjects realignment output graphs show “spikes”- one image here
> or there that is greatly out of alignment compared to rest of images
> (see attached example). Should I/is there any way to exclude a
> particular scan from remainder of processing/analysis and should it be
> done before normalization/smoothing or during model
> specification/estimation?
>
> Thank-you for your help,
>
> Julie
>
> Julie E. McEntee, MA, CCRP
> Senior Research Program Coordinator
> Department of Psychiatry- Neuroimaging
> Johns Hopkins University School of Medicine
> 600 N. Wolfe St./Phipps 300
> Baltimore, MD 21287
> Phone: 410-502-0468
> Fax: 410-614-3676
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