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Abstract #2715

Concurrent Magnetic Field Monitoring of EPI Time Series: Characterizing Encoding Field and Image Fluctuations Using Principal Component Analysis

Saskia Klein1, Lars Kasper1, Johanna Vannesjo1, Maximilian Hberlin1, Simon Gross1, Benjamin Dietrich1, Klaas P. Prssmann1

1Institute for Biomedical Engineering, ETH Zurich, Zurich, Switzerland

In fMRI, changes in image intensity are induced by signal fluctuations, e.g. related to the brain metabolism (BOLD). They can also be caused by gradient system instabilities and drifts, leading to confounds in time series analyses.