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Abstract #4232

Description of the off-resonance dependency in slice-selective FISP MRF

Gregor Körzdörfer1,2, Bartosz Guzek1,3, Yun Jiang4, Josef Pfeuffer1, Bernhard Hensel2, Peter Speier1, and Mathias Nittka1

1Siemens Healthcare GmbH, Erlangen, Germany, 2Max Schaldach-Stiftungsprofessur für Biomedizinische Technik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany, 3Georg-August-Universität Göttingen, Göttingen, Germany, 4Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States

In Magnetic Resonance Fingerprinting (MRF), quantitative parameter maps are generated by matching pseudo randomly generated MR signals with a precalculated dictionary. A common implementation of MRF is based on an unbalanced SSFP (FISP) sequence in combination with a slice-selective excitation. In this work, we demonstrate its sensitivity to off-resonances in specific configurations, investigate the underlying spin physics and derive according mitigation approaches.

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