Abstract #4247

Outer volume suppression improves motion tracking and image quality in self-navigated whole heart cardiac MRI: results from a moving phantom and healthy volunteers

Andrew J Coristine¹, Jerome Chaptinel¹, Giulia Ginami¹, Gabriele Bonanno¹, Simone Coppo¹, Ruud B van Heeswijk¹, Davide Piccini^1,2, and Matthias Stuber^1,3

¹Department of Radiology, University Hospital (CHUV) / University of Lausanne (UNIL), Lausanne, Switzerland, ²Advanced Clinical Imaging Technology, Siemens Healthcare, Lausanne, Switzerland, ³CardioVascular Magnetic Resonance (CVMR) research centre, Centre for Biomedical Imaging (CIBM), Lausanne, Switzerland

In respiratory self-navigation (SN), static structures, such as the arms or chest wall, may complicate motion detection due to the superposition of signal originating from different tissues. Even if motion detection is successful, the subsequent motion correction may introduce streaking artefacts when applied to static structures. Suppressing signal from those tissues may therefore improve image quality. In this study, we address the hypothesis that SN coronary MRA will benefit from the introduction of an outer volume suppressing "2D-T -Prep", and present results from a moving cardiac phantom and 10 healthy volunteers.

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