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Abstract #3385

Assessment of the Gray Zone: A Comparison of Two Quantitative Methods in Heart Failure Patients

Tobias Voigt1, Peter Koken1, Simon G. Duckett2, Anoop K. Shetty2, Christian Stehning1, Aldo Rinaldi2, Reza Razavi2, Tobias Schaeffter2, Andrea J. Wiethoff3

1Philips Research Laboratories, Hamburg, Germany; 2Kings College London, London, United Kingdom; 3Philips Healthcare, Best, Netherlands

In this study gray zone imaging using quantitative T1 mapping sequences was investigated. Two different sequences were compared with respect to gray zone characterization using spin density and T1 values. A standard Look Locker T1 mapping sequence was compared with a modified Look Locker (MOLLI) sequence including cardiac motion correction. Motion corrected MOLLI results showed improved delineation of the myocardial border and a better basis for the determination of the gray zone extent based on a clustering of spin density and T1.