Julian Maclaren1, Oliver Speck2,
Maxim Zaitsev1
1Medical Physics,
University Medical Center Freiburg, Freiburg, Germany; 2Department
of Biomedical Magnetic Resonance, Otto-von-Guericke University, Magdeburg,
Germany
Prospective motion correction is a means to avoid motion artifacts in MR imaging of the brain. This educational e-poster explains how the technique works and reviews the latest developments. Particular emphasis is placed on the various tracking mechanisms currently used to obtain the required head motion data. Finally, a number of effects that introduce errors into the correction process are described, including B0 distortions, gradient non-linearities, and non-uniform coil sensitivity profiles, among others. The aim of this work is to clearly explain the state of the art and to motivate future work in the field.
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