Abstract #0310
A Mechanism for Quantifiable MRI-Based Detection of Cobalt-Chromium Particulate Deposits Near Total Hip Replacements
Kevin M Koch 1 , Matthew F Koff 2 , Parina Shah 2 , and Hollis G Potter 2,3
1
Biophysics and Radiology, Medical College of
Wisconsin, Milwaukee, WI, United States,
2
Radiology
and Imaging, Hospital for Special Surgery, NYC, NY,
United States,
3
Weill
Cornell Medical College of Cornell University, NYC, NY,
United States
Recent clinical patterns have shown an increasing trend
of soft-tissue complications near total hip
replacements, particularly those with metal on metal
bearing surfaces. The presence of substantial metallic
debris can highlight implant malfunction correlated to
wear of the bearing surfaces. Metallic debris generates
a resonance frequency shift that can be detected using
MRI methods. Unfortunately, conventional image artifacts
confound traditional methods for detailed frequency
shift assessments near implants. Here, we demonstrate
quantifiable image contrast highlighting cobalt-chromium
particle deposits near metal implants using MAVRIC field
maps and locally applied dipolar projection background
field removal methods.
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