1Dept. of Radiology - Medical Physics, University Medical Center Freiburg, Freiburg, Germany, 2Dept. of Chemistry, Technische Universität München, Munich, Germany
work discusses steady state issues in SSFP-based fingerprinting
sequences. It is shown that variations of the flip angle destroy the
steady state, causing instabilities with respect to intra-voxel
dephasing. A pseudo steady state can be achieved by adapting TR and
TE to a given flip angle pattern, restoring the typical SSFP
behavior. Furthermore, an iterative reconstruction algorithm for
fingerprinting data is proposed.