Artifacts caused by large magnetic susceptibility differences between metallic probes and the surrounding tissue are a persistent problem in interventional MRI. In 2019, we presented the concept, design and modeling of active shims for metallic probes inspired from naval degaussing systems. Field disturbance induced by a metallic probe at 3 Tesla was modeled and an active shim insert design was presented to shim the field variation around the probe. In this abstract we present the first experimental results showing effective recovery of metallic probe induced signal loss at 3 Tesla.
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