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Abstract #0554

Correction of Dynamic B0 Field Changes in MRSI of the Prostate at 7T Using an Internal Field Probe

Catalina S. Arteaga de Castro1, Vincent Oltman Boer1, Mariska P. Luttje1, Marco van Vulpen1, Peter R. Luijten1, Uulke A. van der Heide2, Dennis W.J. Klomp1

1Imaging Division, University Medical Center Utrecht, Utrecht, Netherlands; 2Radiotherapy, The Netherlands Cancer Institute, Amsterdam, Netherlands

Physiological and patient dependent susceptibility effects take place during the MR sessions, particularly in the human body at high field strengths. Without prior knowledge of where the effects originate, these B0 field dynamic variations can be monitored and corrected as demonstrated by using an internal field probe for MRSI of the human prostate. Correcting MRSI data with the simultaneously acquired field probe data, line width sharpens, artifacts levels are reduced and peaks are better resolved compared to the non-corrected data.