I'm trying to realign & unwarp EPI images because I'm interested on
orbitofrontal activity and would like to be sure I map correctly this part.
I'd thus like to use the field maps I've been acquiring just before my
functionals with the same parmeters. The thing is that I only have a single
nii file in my 'fieldmap' directory after dicom import (The scanner I'm
using is a Siemens Trio 3T). This file does not give me phase & amplitude or
real & imaginary that I could feed the fieldmap toolbox with in order to
obtain a vdm file to feed my realign & unwarp process. I noticed that I get
actually two fieldmap directories per sequence I ran. I guess they could be
phase & amplitude or real & imaginary but I don't know which is which...
So my question is simple: how do I get two measures out of my sequences
(either phase & amplitude or real & imaginary) or if they are these two
separate directories how do I know which is which? should I do a different
Or am I completely wrong, trying to do something that doesn't make sense?