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Abstract #0692

Fast high-resolution isotropic whole-heart T2 mapping using focused navigation

Simone Rumac1, Christopher W. Roy2, Jérôme Yerly2,3, John Heerfordt2,4, Davide Piccini2,4, Matthias Stuber3,5, and Ruud B. van Heeswijk2
1Department of Radiology, Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Laus, Lausanne, Switzerland, 2Department of Radiology, Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland, Lausanne, Switzerland, 3CIBM Center for BioMedical Imaging, Lausanne, Switzerland, Lausanne, Switzerland, 4Advanced Clinical Imaging Technology, Siemens Healthcare AG, Lausanne, Switzerland, Lausanne, Switzerland, 5Department of Radiology, Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne, Lausanne, Switzerland

Cardiac parametric mapping techniques are gaining traction for the clinical routine assessment of various pathologies. Despite the complex 3D patterns of many myocardial conditions, most current techniques are breath-held single-slice 2D acquisitions. We propose a free-breathing high-resolution isotropic 3D T2 mapping technique for the heart where breathing motion is corrected in k-space before image reconstruction. In 4 healthy volunteers and one patient with myocardial infarction, we found that our technique produced sharp and accurate T2 maps but had slightly lower precision than routine techniques.

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