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Abstract #0353

Prospective Head Motion Correction Using Orbital K-Space Navigators and a Linear Perturbation Model

Thomas Ulrich1, Malte Riedel1, and Klaas Pruessmann1
1Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland


It has recently been proposed to estimate head motion from orbital k-space navigators based on a linear signal model of the complex-valued navigator signal. In this work, we describe the combination of this algorithm with prospective motion correction, forming a control circuit that tracks the head so that the linear model remains valid also for large motion ranges. This ability is demonstrated by implementation and in-vivo imaging at 7T.

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