Eelke Visser1,2, Shaozheng Qin1,3,
Marcel P. Zwiers1,2
1Donders Institute for Brain, Cognition
and Behaviour, Radboud University Nijmegen, Nijmegen, Netherlands; 2Department
of Psychiatry, Radboud University Nijmegen Medical Centre, Nijmegen,
Netherlands; 3Department of Neurology, Radboud University Nijmegen
Medical Centre, Nijmegen, Netherlands
Susceptibility
gradient induced distortions are a well-known problem of EPI. We show that
group fMRI results can be improved using a variation on an existing method
for estimating the displacements using the mutual information between the EPI
images and a reference T1 image.