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Abstract #0428

Pseudo Steady State Free Precession for MR-Fingerprinting

Jakob Assländer1, Steffen Glaser2, and Jürgen Hennig1

1Dept. of Radiology - Medical Physics, University Medical Center Freiburg, Freiburg, Germany, 2Dept. of Chemistry, Technische Universität München, Munich, Germany

This 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.

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