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Abstract #2065

Frontal Cortex FMRI at 7T: Escaping Flat Minimum Traps in Higher-Order B0 Shimming Algorithms

Ariane Fillmer1, Milan Scheidegger1, 2, Peter Boesiger1, Anke Henning1

1Institute for Biomedical Engineering, University and ETH Zurich, Zurich, ZH, Switzerland; 2Clinic of Affective Disorders and General Psychiatry, University Hospital of Psychiatry Zurich, Zurich, ZH, Switzerland

To make use of the full capacity of fMRI applications in ultra-high field strengths, an excellent B0 shimming is inevitable. Usually these applications suffer from major distortions and signal drop-outs in the frontal cortex area. This work presents a modified approach of B0 shimming, which enables the restoration of signal in the frontal cortex and therefore renders fMRI applications in the frontal cortex possible.

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