Abstract #0616

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

Ingo Hermann^1,2, 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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