Abstract #4225

Steady-State Magnetic Resonance Fingerprinting

Thomas Amthor¹, Peter Koken¹, Karsten Sommer¹, Mariya Doneva¹, and Peter Börnert¹

¹Philips Research Europe, Hamburg, Germany

We propose an acceleration technique for MR Fingerprinting measurements based on Cartesian or otherwise segmented sampling. We show that quick repetition of MR Fingerprinting sequences leads to stationary signal responses. Instead of waiting for the spin system to relax completely before the start of the next fingerprint sequence, we take the evolution of the spin system into account and calculate a dictionary of steady-state fingerprints. We present a Cartesian fingerprint measurement with a SENSE factor of four. Using our method, additional acceleration by more than a factor of two could be achieved, without reducing the match accuracy.

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