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Abstract #2068

Respiratory motion-registered isotropic 3D whole-heart T2 mapping in patients with suspected inflammatory myocardial injury

Karolina Dorniak1, Lorenzo Di Sopra2, Agniezka Sabisz3, Anna Glinska3, Christopher W Roy2, Kamil Gorczewski4, Davide Piccini2,5, Jérôme Yerly2,6, Jadwiga Fijałkowska3, Edyta Szurowska3, Matthias Stuber2,6, and Ruud B van Heeswijk2
1Department of Noninvasive Cardiac Diagnostics, Medical University of Gdansk, Gdansk, Poland, 2Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland, 32nd Department of Radiology, Medical University of Gdansk, Gdansk, Poland, 4Siemens Healthineers, Erlangen, Germany, 5Advanced Clinical Imaging Technology, Siemens Healthcare AG, Lausanne, Switzerland, 6Center for Biomedical Imaging (CIBM), Lausanne, Switzerland

T2 mapping can be used to effectively detect myocardial edema and inflammation. However, the focal nature of myocardial inflammation may render 2D approaches suboptimal and make whole-heart isotropic 3D mapping desirable. Unfortunately, at 1.5T, self-navigated 3D radial bSSFP results in too noisy images for adequate T2 mapping. In this study, we therefore used a respiratory motion-resolved reconstruction together with image registration to improve the 3D T2 mapping precision and accuracy at 1.5T in patients with inflammatory myocardial injury. The resulting myocardial T2 values matched those of the routine 2D T2 maps, with no discernible bias and slightly lower precision.

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