Meeting Banner
Abstract #3067

Physiological and System-induced Field Fluctuations in EPI time series in vivo

Saskia Klein 1 , Lars Kasper 1 , S. Johanna Vannesjo 1 , Simon Gross 1 , Benjamin Dietrich 1 , Christoph Barmet 1,2 , Maximilian Haeberlin 1 , David O. Brunner 1 , Bertram J. Wilm 1 , and Klaas P. Prssmann 1

1 Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zurich, Switzerland, 2 Skope Magnetic Resonance Technologies LLC, Zurich, Switzerland

We used concurrent magnetic field monitoring in-vivo to measure system and physiological fluctuations in the encoding fields of multiple EPI time series. Principal component analysis disentangled these fluctuations based on their frequency components in the projections. Despite the robust detection of physiologically induced field fluctuations, the observed SFNR losses are small at 3T. However, correcting for system-induced fluctuations in the encoding fields using concurrent magnetic field monitoring increased the SFNR considerably.

This abstract and the presentation materials are available to members only; a login is required.

Join Here