Marker Tracking for Interventional Magnetic Resonance

摘要

A fiducial marker assembly ( 30 ) is tracked using a magnetic resonance scanner ( 10 ). At the tracked position of the fiducial marker assembly, local B0 magnetic field inhomogeneity is measured. A warning is issued if the measured local B0 magnetic field inhomogeneity satisfies a warning criterion. A noise figure of merit of the tracking is also determined, and the warning is also issued if the noise figure of merit satisfies a noise-based warning criterion.