Dear SPMers,
I'm beginner with SPM. I use SPM2 to create fieldmap and match it to epi
(toolboxe) and run Realign&Unwarp with spm5, as it was been suggested that
it is possible.
I have some results that are not so clean.
I have two questions:
*question 1)
In spm help and FieldMapToolboxes of SPM2 it is recommanded to select the
phase map for the first session without selecting any map for the
remaining sessions(same indications in the Example Data).
but, in the SPM5 manual I found: "only add similar step session data to a
realign+unwarp branch, i.e., choose Data or Data+phase map for all
sessions, but don't use them interchangably"
that I translate : load data AND vdm for all sessions.
*question 2) If I choose WRAP option (both in realign estimation options
and in unwrap reslicing option) I know that I must choose Wrap in Y.
But I don't know if it's a good idea..?? (images have not been resliced
after slice timing)
I tried to compare but I am novice and would appreciate some help !!
Thank you!!
Gwladys
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