Meeting Banner
Abstract #3169

Motion correction using Pilot Tone: a general model-based approach

YAN TU HUANG1, Peter Speier2, Tom Hilbert3,4,5, and Tobias Kober3,4,5
1Magnetic Resonance, Siemens Shenzhen Magnetic Resonance Ltd., Shenzhen, China, 2Magnetic Resonance, Siemens Healthcare, Erlangen, Germany, 3Advanced Clinical Imaging Technology, Siemens Healthcare, Lausanne, Switzerland, 4Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland, 5LTS5, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland


Motion continues to be a major impediment in clinical MRI. Using Pilot Tone to correct for motion is highly attractive as it uses inexpensive hardware and is independent from sequence. Here, we propose a model-based approach to calculate motion parameters from Pilot Tone signal. To avoid non-convergence those models are prone to, we introduce predefined displacement fields with the Pilot Tone as auxiliary, resulting in a linear motion model with fewer unknowns. Validation is performed on numerically simulated data and in-vivo measurements, comparing different motion models. Image reconstructions with the Pilot Tone showed fewer residual motion artefacts and converged faster.

This abstract and the presentation materials are available to members only; a login is required.

Join Here