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Abstract #7977

Eddy Currents & Interactions: Calibration, Compensation, & Pre-Emphasis

David Otto Brunner1,2

1ETH Zurich, Zurich, Switzerland, 2Skope Magnetic Resonance Technologies, Zurich, Switzerland

The native accuracy of gradient and shim systems is too low in order to drive MRI sequences. To avoid corresponding image artefacts the gradient chains are feed-backed, pre-distorted and post-corrected based on accurate characterizations or direct measurements of the field evolution in the scanner. In this talk, the underlying principles of the encountered distortions and frequently applied correction methods will be discussed.

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