Abstract #2516
Fluid-Sensitive Metal Artifact Reduction using a 3D-Composite Fast Steady State Free Precession (COFIsp) sequence
Xeni Deligianni 1,2 , Thomas Egelhof 2 , Thorsten Wischer 2 , Reinhard Elke 2 , and Oliver Bieri 1
1
Radiology, Division of Radiological Physics,
University of Basel Hospital, Basel, NA, Switzerland,
2
Merian
Iselin Klinik, Basel, NA, Switzerland
Magnetic resonance imaging (MRI) in the vicinity of
metal hardware is stll characterized by long scan times
for the acquisition of composite images and low fluid
sensitivity. Here we propose an optimized composite fast
steady state free precession sequence (COFIsp) as a
fast, clinically feasible alternative for acquisition of
fluid-sensitive and distortion-free images in the
presence of metal. For distortion correction additional
prephasing gradients and optimized phase encoding
orientation were investigated. The sequence allows good
artifact correction and high fluid contrast which is
very important for the visualization of inflammation.
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