Hi,
I would like to ask for clarification about statements concerning topup
and applytopup for fMRI data on this list.
In the course of a previous discussion, Mark told me in order to use
topup for distortion correction in fMRI images I would have to use the
field derived from it like a fieldmap in epireg:
Item 061269
2014-05-06 Re: flirt-bbr -fieldmap comapred to flirt -bbr / freesurfer
bbregister
https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind1405&L=FSL&P=R14389&1=FSL&9=A&J=on&d=No+Match%3BMatch%3BMatches&z=4)
But in another question about topup correction for r-fMRI, Jesper said
applytopup can be used for this purpose with the jac method:
Item 058727
2014-01-23 Re: TOPUP for r-fMRI
https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind1401&L=FSL&P=R108610&1=FSL&9=A&I=-3&J=on&d=No+Match%3BMatch%3BMatches&z=4)
So if I have fMRI data and two se-epi scans just as described in the
latter thread, can I use topup+applytopup to correct my fMRI data or do
I have to use topup+epireg?
Many thanks!
Julia
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