Dear SPM'ers.
I am in the process of analysing an fMRI data set. However, I am having
problems with the amount of movement (greater than 5 degrees rotation and 5
mm translation) in some of the subjects. In some instances it is just 1
scan volume where there is a large movement before returning to the
original position and in other cases there is a large movement and then the
new position is maintained for the remaineder of the scanning session.
I have tried to seperately move the position of the images where there is a
large movement, using the 'reorientate' option before realignment, however,
even though .mat files are generated during 'reorientation' they appear to
have no effect on the realignment step (I am getting identical motion plots
before and after I perform any reorientation of the images).
My question is therefore, is there a way to manually realign specific
images where there is a large movement to bring them back into line with
the rest of the data set before realignment?
With many thanks in advance,
Jenny Bell
PhD Student - University of Nottingham
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