Abstract #0170

Preventing Signal Dropouts in DWI using Continous Prospective Motion Correction

Michael Herbst¹, Julian Maclaren¹, Matthias Weigel¹, Jan Gerrit Korvink^2,3, Maxim Zaitsev¹

¹Medical Physics, University Medical Center Freiburg, Freiburg, Germany; ²Dept. of Microsystems Engineering - IMTEK, University of Freiburg, Freiburg, Germany; ³Freiburg Institute of Advanced Studies (FRIAS), University of Freiburg, Germany

Diffusion weighted imaging (DWI) has become indispensable in clinical routine, especially due to its sensitivity to early stages of brain ischemia. Patient motion during measurements is a major source of artifacts. There are different approaches to correct for rigid body motion depending on the type of motion. However, intrascan motion remains problematic for all of these correction methods. Even for single-shot EPI intrascan motion can lead to severe signal dropouts. This work presents a method to continuously apply prospective motion correction to correct for intra- and interscan motion with six degrees of freedom.