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Abstract #0915

Lipid-insensitive 4D motion-resolved free breathing coronary MRA in heart transplant recipients at 3T

Jessica A.M. Bastiaansen1, Lorenzo Di Sopra1, Giulia Ginami2, Hugues Vinzant1, Juan F Iglesias3, Sophie Degrauwe3, Samuel Rotman3, Davide Piccini1,4, Ruud B Van Heeswijk1,5, Roger Hullin3, Jérôme Yerly1,5, and Matthias Stuber1,5

1Department of Radiology, University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland, 2School of Biomedical Engineering and Imaging Sciences, King’s College London, Lausanne, Switzerland, 3Cardiology Service, Lausanne University Hospital (CHUV), Lausanne, Switzerland, 4Advanced Clinical Imaging Technology, Siemens Healthcare AG, Lausanne, Switzerland, 5Center for Biomedical Imaging, Lausanne University Hospital (CHUV), Lausanne, Switzerland

The purpose of this study was to investigate coronary magnetic resonance angiography (MRA) at 3T as a possible alternative to invasive X-ray coronary angiography for the visualization of proximal and mid segments of the coronary arterial system in heart transplant recipients. Therefore, a lipid-insensitive binomial off-resonance excitation (LIBRE) pulse was optimized and combined with a 3D radial whole-heart sequence. Respiratory-self-navigated MRA was performed at 3T in heart transplant recipients during and after Gd infusion, and was compared with respiratory-motion compensation using compressed sensing (CS) to define the preferred acquisition and reconstruction protocol in this patient group.

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