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Abstract #1366

Fast Cardiac T1 Quantification with an ECG-Triggered Radial Single-Shot Inversion Recovery Sequence (TRASSI)

Daniel Gensler1, Philipp Mrchel1, Florian Fidler1, Oliver Ritter2, Mark E. Ladd3, Harald H. Quick4, Wolfgang Rudolf Bauer2, Peter M. Jakob1, 5, Peter Nordbeck2

1Research Center for Magnetic Resonance Bavaria e.V., Wrzburg, Bavaria, Germany; 2Department of Internal Medicine I, University Hospital Wrzburg, Wrzburg, Bavaria, Germany; 3Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany; 4Institute of Medical Physics, University Erlangen-Nrnberg, Erlangen, Bavaria, Germany; 5Experimental Physics 5, Iniversity of Wrzburg, Wrzburg, Bavaria, Germany

Cardiac T1-mapping is becoming an increasingly important imaging technique, which establishes new non-invasive diagnostic possibilities. Currently common T1-mapping methods are known to be highly heart rate dependent and T1 is underestimated. Furthermore, these methods are quite slow, requiring breath holds up to 18s and more. Therefore, this work presents a fast cardiac T1 quantification technique, which can generate very accurate T1-maps in very short time (6s). This was realized by using an ECG-triggered radial single-shot IR sequence (TRASSI) with a special fitting algorithm. Herewith, accurate, high-resolution T1-maps without motion artifacts and without any heart rate dependency can be acquired.