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Abstract #0616

Feasibility and insights into transient state phase-based mapping for rapid T2 quantification in the myocardium

Ingo Hermann1,2, Daiki Tamada3, Scott Reeder3, Lothar Schad2, and Sebastian Weingärtner1
1Magnetic Resonance Systems Lab, Department of Imaging Physics, Delft University of Technology, Delft, Netherlands, 2Computer Assisted Clinical Medicine, Medical Faculty Mannheim, University Heidelberg, Mannheim, Germany, 3Department of Radiology, University of Wisconsin, Madison, WI, United States

In this study we explore the use of the signal phase of RF phase modulated gradient echo imaging during steady state for rapid T2 mapping in the myocardium. RF phase modulated GRE images were obtained with quadratic phase increments of ±2° and T2 times were extracted by matching the phase evolution. B1+ sensitivity was incorporated in the reconstruction based on separately acquired Bloch-Siegert maps. Good correlation was found in phantom measurements (R>0.95; p<0.0001) and high visual image quality in vivo.

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