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Abstract #1367

Suppressing blood signal in myocardial T mapping at 3T through novel dark-blood adiabatic spin-lock preparations.

Chiara Coletti1, Maša Bozic-Iven1,2, Joao Tourais1, Christal van de Steeg-Henzen3, Mehmet Akcakaya4, and Sebastian Weingärtner1
1TU Delft, Delft, Netherlands, 2Heidelberg University, Heidelberg, Germany, 3HollandPTC, Delft, Netherlands, 4University of Minnesota, Minneapolis, MN, United States

Synopsis

Keywords: Relaxometry, New Signal Preparation Schemes, T1ρ, Dark-blood, adiabaticT-mapping is emerging as a promising, contrast-free alternative to LGE for assessment of myocardial viability. However, high blood T values can obfuscate endocardial scar. In this work, we propose a dark-blood adiabatic T preparation to suppress the blood signal and improve depiction of the blood-myocardium interface. A slice-selection gradient is added to an odd number of adiabatic full passage pulses to achieve blood inversion outside the imaging slab. Phantom results show that DBT yields unbiased estimation of T time. In vivo, thorough blood suppression is achieved for the trade-off against a moderate increase in DBT variance.

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Keywords