The wrapping does not correct ghosting artifacts, but is sometimes
useful for scans collected with the subject poorly positioned in the
scanner (such as when the back of the brain pokes into the most
anterior part of the image). Enabling wrapping can also help the
interpolation slightly, but this probably does not make so much
difference.
You are correct in the interpretation of what I meant by "resliced".
Best regards,
-John
On 2 April 2011 18:54, Josselin Houenou <[log in to unmask]> wrote:
> Dear all,
>
> I am preprocessing fMRI data and I have two questions about the "wrapping" option.
>
>
> -is this option designed to correct important ghosting effect ?
>
> -in
> https://www.jiscmail.ac.uk/cgi-bin/wa.exe?A2=ind04&D=0&F=8004982086504885&L=SPM&P=2372823
> you suggest not to use wrap in case of resliced data. By "resliced", do you only mean spatially resliced ?
> Is it ok to do wrapping after slice timing ?
>
> thanks !
>
> Josselin Houenou
>
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