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Abstract #1815

Variable Temporal Resolution Cartesian Sampling for Cell Tracking MRI

Mark Armstrong1, Felix Freppon2, Enrica Wilken2, Max Masthoff2, Cornelius Faber2, and Dan Xiao1
1University of Windsor, Windsor, ON, Canada, 2Universität Münster, Münster, Germany

Individual iron oxide nanoparticle labelled immune cells can be visualized with a dynamic MRI image series. Time-lapse MRI can provide insights in the studies of inflammatory diseases and metastasis of cancer. The MRI temporal resolution can be improved by undersampling k-space. However, the optimal acceleration factor cannot be easily determined prior to experiments. Strategies have been proposed for non-Cartesian flexible retrospective undersampling, which may not be readily applicable for most users. We propose a Cartesian sampling scheme where undersampling ratio and temporal resolution can be chosen retrospectively.

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