Slice ordering is something that your local physicists may be able to advise
on. Some (most??) manufacturers do not actually save the slice order in the
DICOM files produced by the scanner. It is therefore not possible to
automatically encode the slice order in the NIfTI headers (even though there
is space to write such information).
I never actually do any fMRI analysis, but was wondering what the expert view
would be if this option was removed in SPM8. From a generative modelling
perspective, the design matrix, rather than the data, should be adjusted to
account for different acquisition times (i.e., to maximise the probability of
the data given the model).
Best regards,
-John
On Wednesday 07 January 2009 14:35, s yq wrote:
> Dear users,
>
> Would some one please tell me that from where can I read the slice
> acquisition order is ascending (1,2,3...), descending(23,22,21...) or
> interleaved, (1,3,5... 2,4,6) and the Reference Slice is which slice?
>
> I used MRIcro to open the dicomed hdr file (Header - open head), and then
> click Header - information, however only can see the TR, TE, time and so on
> there in the notes.
>
> Best regards
> Yiquan
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