What is the best similarity measure for motion correction in fMRI time series?

It has been shown that the difference of squares cost function used by standard realignment packages (SPM and AIR) can lead to the detection of spurious activations, because the motion parameter estimations are biased by the activated areas. Therefore, this paper describes several experiments aiming at selecting a better similarity measure to drive functional magnetic resonance image registration. The behaviors of the Geman

• Type: Journal
• Year: 2002
• Where: TMI
• Authors: Luis Freire, Alexis Roche, Jean-Francois Mangin
• Keywords: Motion Parameter Estimations, Robust Metrics, Standard Realignment Packages, TMI 2002