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Abstract #4109

Comparison of three surrogate-based respiratory motion correction methods for 3D high resolution cardiac MRI

Juliane Ludwig1, Peter Speier2, Frank Seifert1, Tobias Schaeffter1,3, and Christoph Kolbitsch1,3

1Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany, 2Siemens Healthcare, Erlangen, Germany, 3King's College London, Division of Imaging Sciences and Biomedical Engineering, London, United Kingdom

Respiratory motion correction has been proposed to improve scan efficiency and ensure high image quality for 3D cardiac MRI. Nevertheless, these techniques often require dedicated data acquisition and cannot necessarily capture intra-cycle variations of the breathing. Here we compare three different surrogate signals (“pilot tone”, respiratory belt and MR-navigator) for a surrogate-based motion correction approach which provides motion information with high temporal resolution and can be combined with a wide range of different MR acquisition schemes. The temporal stability of these surrogates is assessed and motion correction of a 3D cardiac MR scan is demonstrated.

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