Abstract #0779

Efficient high-resolution cardiac motion-corrected T1 mapping

Kirsten Miriam Becker¹, Edyta Blaszczyk^2,3,4, Stephanie Funk^2,3,4, Jeanette Schulz-Menger^2,3,4, Tobias Schaeffter^1,5, and Christoph Kolbitsch^1,5

¹Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany, ²Charité Medical Faculty University Medicine, Berlin, Germany, ³Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center (ECRC), DZHK partner site Berlin, Berlin, Germany, ⁴Department of Cardiology and Nephrology, HELIOS Klinikum Berlin Buch, Berlin, Germany, ⁵Division of Imaging Sciences and Biomedical Engineering, King's College London, London, United Kingdom

Cardiac T₁ mapping provides valuable information on fibrosis in various cardiomyopathies. Commonly, data acquisition is restricted to a small percentage (mid-diastole) of the cardiac cycle to prevent motion artefacts. This leads to low scan efficiency and limits the achievable resolution. We present an 8s T₁ mapping approach, which employs a large acquisition window (80% of the cardiac cycle) and corrects for cardiac motion using the same data. The approach was evaluated in native T₁ mapping in healthy volunteers and post-contrast T₁ mapping in patients. It significantly improved the precision of the obtained T₁ maps while successfully minimizing cardiac motion artefacts.

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