Hi,
I have a dataset with 12 ZOOM-EPI slices (FOV 13cm), parallel to the
calcarine sulcus, covering approx. 2/3 of the brain in
ant.-post-direction.
There is a slight drift in the data along the y axis, which I want to
remove with mcflirt. However, mcflirt doesn't really like the data, ie.
after correction, there are all kinds of additional (visible) motion in
the dataset. I tried -2d, -gdt, -edge, -fov options, but could not
achieve significant improvements. Especially the slow drift still
remains in the data.
I guess the problem is that the FOV barely covers the brain from left to
right and only has the posterior parts. (screenshot is attached)
Does anyone have experience with this kind of data and maybe suggestions
what to try next? The amount of motion is more than I could tolerate
for the intended analysis, so I cannot simply ignore it.
Thanks in advance,
Michael
--
GPG key: 1024D/3144BE0F Michael Hanke
http://apsy.gse.uni-magdeburg.de/hanke
ICQ: 48230050
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