Hi Jeffrey,
you might try independent component analysis as you find in
MELODIC - a part of Oxfords FSL package. On the MELODIC
web page or within the FSL tutorial you find info how to use
melodic to remove artifacts.
Of course, there is no guarantee that it will work - but at least I
would give it a try...
Good luck and let me know if you proceed.
Lukas
Date sent: Wed, 26 Nov 2003 14:57:26 -0500
Send reply to: Jeffrey P Lorberbaum <[log in to unmask]>
From: Jeffrey P Lorberbaum <[log in to unmask]>
Subject: ghosting problem
To: [log in to unmask]
Dear group:
I have a couple of subjects in a BOLD-fMRI experiment whose data has bad
ghosting. Is there any post-hoc procedures to reduce the ghosting - it
takes away from signal intensity in certain brain regions in the
image volumes.
(The data was acquired some time ago on a Philips 1.5T which uses
automated
tuning if that matters).
Sincerely,
Jeff Lorberbaum
Lukas Scheef, MD, MSc
MR-Tomography
Department of Radiology
University of Bonn
Sigmund-Freud-Straße 25
D-53105 Bonn
Fax: +49-228-287-5598
Phone:+49-228-287-4496
E-mail: [log in to unmask]
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