Correction of Subject Motion in Quantitative T2*-Mapping

Joerg Magerkurth^1,2, Steffen Volz², Marlies Wagner¹, Alina Jurcoane¹, Sandra Anti², Elke Hattingen¹, Ralf Deichmann²

A method for the correction of artifacts induced by subject motion in quantitative T2* maps is presented, based on scan repetition with reduced spatial resolution and weighted averaging of both raw data sets, choosing the weighting factor individually for each k-space line to eliminate motion affected contributions. The technique is tested on healthy volunteers performing deliberate head movement during the scan. The method can be implemented on any clinical scanner allowing for multiple gradient echo imaging with modulus and phase data export.