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.