A Method to Eliminate Motion-Related Ghosting Artifacts from Images of Active Devices During Parallel Imaging

Ashvin Kurian George¹, Christina E. Saikus¹, Ozgur Kocaturk¹, Robert J. Lederman¹, Anthony Z. Faranesh¹

We present a method to remove the ghosting artifact from images formed from under-sampled active device data such as in multi-slice, parallel imaging systems for MR-guided interventions. Ghosting is caused by discontinuities in Fourier space along the phase-encoding direction. The method works by first forming an image from temporally-local, under-sampled Fourier data. This image contains periodically repeated copies in the phase-encoding direction. The non-ghost period of each column is determined by using the view-shared image and exploiting the correlation of the active device image across columns.