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Abstract #3198

Correction of Artifacts in Ultrahigh Field T 2 * Imaging Using a Training Model for Field Probe Based B 0 Measurements

Anders Garpebring 1,2 , Joep Wezel 1 , Vincent O. Boer 3 , Tijl A. van der Velden 3 , Andrew G. Webb 1 , Dennis W.J. Klomp 3 , and Matthias J. P. van Osch 1

1 C.J. Gorter center for high field MRI, Radiology, Leiden University Medical Center, Leiden, Netherlands, 2 Radiation Sciences, Ume University, Ume, Sweden, 3 Radiology, University Medical Center Utrecht, Utrecht, Netherlands

In ultrahigh field MRI B 0 fluctuations caused by breathing can seriously degrade T 2 * -weighted images. The purpose of this work was to investigate if field probes in combination with training data can be used for correction of artifacts resulting from heavy breathing. Results based on data from a 7 T scanner show that it is possible to correct B 0 induced artifacts and that the new method provided improvements compared to the method normally used today.

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