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Abstract #0449

Correction of background phase offsets in phase-contrast MRI using concurrent magnetic field monitoring.

Daniel Giese 1,2 , Bertram Wilm 2,3 , Julia Busch 2 , David Maintz 1 , Christoph Barmet 2,3 , Klaas Pruessmann 2 , and Sebastian Kozerke 2

1 Radiology, University Hospital Cologne, Cologne, Germany, 2 Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland, 3 Skope Magnetic Resonance Technologies, Zurich, Switzerland

Concurrent magnetic field monitoring is used to analyze and correct for eddy-current related background phase offsets in phase-contrast MRI. It is demonstrated that 3rd order correction results in residual background offsets of less than 0.6 cm/s. Using simultaneous acquisition of field monitoring and imaging data, temperature dependent changes in background phase offsets are inherently captured and corrected for.

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