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