Keywords: System Imperfections: Measurement & Correction, Thermometry, Proton Resonance Frequency Shift, Phase DriftProton Resonance Frequency Shift Thermometry relies on a homogeneous B0-field as the B0-field significantly influences the resonance frequency. A multitude of phase drift correction methods have been proposed. The temperature accuracy and computing time of reference-less phase estimation, prospective, and fat-based phase correction have been evaluated in a manually segmented dorsal muscle ROI in the pelvic region of free-breathing volunteers. The evaluated phase drift correction methods correct phase drift comparably regarding temperature accuracy. Fat-based and prospective phase correction are almost ten times faster than reference-less phase estimation but require a reliable baseline acquisition.
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