Meeting Banner
Abstract #2436

Multi-Spectral Imaging Near Metal: Understanding Performance Differences Between 1.5T and 3.0T

Kevin M. Koch1, Matthew F. Koff2, Hollis G. Potter2

1Applied Science Laboratory, GE Healthcare, Milwaukee, WI, United States; 2Department of Radiology and Imaging, Hospital for Special Surgery, New York, NY, United States

Initial clinical investigations have focused on applying Multi-Spectral Imaging (MSI) techniques near metal at 1.5T. Recent clinical probes applying MAVRIC-SL MSI technique at 3.0T have also shown encouraging results. Here, we demonstrate the performance impact of MAVRIC SL at 1.5T vs 3.0T. The observed performance difference between the two field strengths is explained, and a modification to MAVRIC-SL is proposed to improve performance at 3T. The results indicate that MAVRIC-SL substantially reduces susceptibility artifacts and can be applied effectively at both field strengths. However, the image quality of MAVRIC-SL, or any MSI technique, will consistently be better at 1.5T compared to 3T

Abstract PDF

Keywords

acquisition acquisitions added addition additional allow always application applied applies applying aqueous around arrow artifacts assessing attainable available bandwidth better bins bottom bulk chromium clearly clinical cobalt complications conjunction coronal correlates coverage degradation developed distortion distortions double effective encoding equipped excitation expanding expect expected expense extended extra field fitted frequency gained gradient gradients greater green grid hand hardware hospital impact implant improvements independent indicated indicates indicating induced intensity interface interfaces investigate investigations laboratory local loss manually metal missing moderate moving near nearly offers optimized orange outlined overlapping oversimplified patient performance phantom phenomenon placed plastic plot potter preliminary presence previously process profiles properly protocol radiology rapid readout recommended recovery reducing reduction reformats remaining remains replacement roughly selective separate separated setting severe shaft since slab slightly soft solution source spanning special spectral still strength strengths successfully suggests surgery susceptibility systems taking theory tissue titanium trace traces trend understanding utility variation whenever whereby zoomed