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Abstract #0751

Real-Time Adaptive Suppression of MR Gradient Artifacts on Electrocardiograms Using a New 3D Hall Probe

Julien Oster1,2, Joris Pascal3, Olivier Pietquin1,4, Michel Kraemer5, Jean-Philippe Blond3, Jacques Felblinger1,2

1U947, Inserm, Nancy, France; 2IADI, Nancy-Universit, Nancy, France; 3InESS, CNRS - Universit de Strasbourg, Strasbourg, France; 4IMS Research Group, SUPELEC Metz Campus, Metz, France; 5Schiller Mdical, Wissembourg, France

Cardiac MR Acquisitions have to be synchronized with heart activity to avoid motion artifacts. Electrocardiogram (ECG) is the most accurate tool for this purpose. MR environment induces artifacts on ECG signals due to static magnetic field, Radiofrequency pulses and magnetic gradients. In this paper a new real-time gradient artifact reduction method, which does not require any connection to the MR system, is presented. A new Hall probe, integrated on a 0.35um CMOS technology provides information on magnetic gradients. The presented method gives similar results than state of art and enables real-time triggering.