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Abstract #2435

Local Gradient Effects on Spectral Binning of 3D Multi-Spectral Images Near Metal Implants

Kevin M. Koch1, Pauline Worters2, Brian A. Hargreaves2

1Applied Science Laboratory, GE Healthcare, Milwaukee, WI, United States; 2Department of Radiology, Stanford University, Stanford, CA, United States

3D Multi-Spectral Imaging (MSI) methods can substantially reduce MR susceptibility artifacts commonly found near metal implants. MSI techniques excite and independently encode a multitude of spectral "bins" or, spectral-spatial volumes, and then add these bins together to form a composite image. MSI techniques must carefully choose spectral bin windowing strategies to provide a smooth composite image. Near metal, regions are often encountered that possess strong gradients that disrupt encoding processes applied even in MSI techniques. Here, we address the effect of these strong gradients on MSI spectral binning strategies.

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Keywords

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