Abstract #4529

Optimized fast dictionary matching for magnetic resonance fingerprinting based on echo-planar imaging for enhanced clinical workflow

Ingo Hermann¹, Benedikt Rieger¹, Jascha Zapp¹, Sebastian Weingärtner^1,2,3, and Lothar R. Schad¹

¹Computer Assisted Clinical Medicine, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany, ²Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, United States, ³Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States

In this work, an optimized fast group matching reconstruction for magnetic resonance fingerprinting based on echo-planar imaging was evaluted to enhance clinical usability. This scanner based 'on the fly' reconstruction reduced the reconstruction time by an acceleration factor of 10 shortening the reconstruction to 10 seconds. The fast group matching algorithm was tested in-vivo and compared with full dictionary matching and resulted in virtually no deviation in T₁ and T₂* maps facilitating the use of MRF in clinical routine.

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