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Abstract #3087

Phantom-based high-resolution measurement of the gradient system transfer function

Hannah Scholten1, Manuel Stich2, and Herbert Köstler1
1Department of Diagnostic and Interventional Radiology, University of Würzburg, Würzburg, Germany, 2Siemens Healthcare, Erlangen, Germany

The gradient system transfer function (GSTF) constitutes a comprehensive tool for correcting k-space trajectory distortions due to gradient infidelities. We developed a new phantom-based measurement approach that allows determining the GSTF with a high frequency resolution without relying on long readout durations. Our first results include self- and B0 cross-terms with high SNR and resolutions below 10 Hz, resolving the true width of several resonances. The high resolution enables us to capture long-lasting eddy current effects, which is especially promising for the application of GSTF-based correction methods in, for example, diffusion-weighted imaging.

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