''Artifacts caused by large magnetic susceptibility differences between metallic needles and tissue are a persistent problem in many interventional MRI applications. The signal void caused by ...'
''Shimming in magnet technology refers to the process of removing small inhomogeneities which are present in the magnetic field. Technically, it is not possible to produce magnets with a perfectly homogeneous field(typical: ±100 ppm). This is due to ...'
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