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Abstract #3075

Prediction of Susceptibility-Induced Artefacts for Prospective Motion Correction

Rainer Boegle1, Julian Maclaren1, Maxim Zaitsev1

1Dept. of Diagnostic Radiology, Medical Physics, University Hospital Freiburg, Freiburg, Germany

In prospective motion correction, orientation and position changes of the imaged object lead to susceptibility-induced image distortions. In real time imaging, like real-time fMRI it is not possible to acquire field maps of the object for each step in the time series. We therefore apply a method for rapidly calculating field inhomogeneities for an object with a known susceptibility distribution. The resulting field maps are compared to acquired field maps for a custom-made phantom and found to match well. This is an important step towards prediction and correction of susceptibility-induced image distortions in prospective motion correction.