Meeting Banner
Abstract #0222

Extracting Phase Contrast from MAVRIC Images Near Metal Implants

Kevin M. Koch1, Matthew F. Koff2, Weitian Chen3, 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; 3Applied Science Laboratory, GE Healthcare, Menlo Park, CA, United States

The MAVRIC Multi-Spectral Imaging technique acquires 4D datasets, resolving spins around metal implants in space and Larmor frequency offset. Here, we demonstrate a novel processing technique that extracts phase-contrast images from conventional MAVRIC acquisitions. Dominant trends induced by metal hardware in the phased images are removed to reveal underlying tissue with phase-contrast. The presented method may offer a means to differentiate types of adverse tissue responses near metal implants.

Keywords

ability accomplish advantageous allow another applied around assess attributed averaging bilateral bins bone bottom classes clear closer collected combination complex complications composite constructed constructions contaminate contrast correlation crude detectable developed differentiate differentiating differentiators directly displayed domain easily encoded encompassing examine exhibits explore explored expose extracted extracting feasible field finally finer form frequency fusion gained half hardware highly hypersensitivity identifying implant implants importance important increasing induced interpretation investigation joint laboratory local magnitude maps mechanisms metal middle minimal modes modification natively near next north novel overlapping particular particulate perturbations phasing pixel potential potter presence principle processed processing proof proportional pulses radiology reactions recent remain remove render replacement replacements resolution response responses reveal scale science seek selection sensitivities series simply since slice smooth soft space special spectral spectrally squares step strategy substantial subtract summing surgery surrounding susceptibility task temporal tissue tissues transform transformation transformed trend trends types underlying variation variations vicinity virtual wear whether