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Abstract #0779

Efficient high-resolution cardiac motion-corrected T1 mapping

Kirsten Miriam Becker1, Edyta Blaszczyk2,3,4, Stephanie Funk2,3,4, Jeanette Schulz-Menger2,3,4, Tobias Schaeffter1,5, and Christoph Kolbitsch1,5

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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