''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 ...'
There is a theory which states that if ever anybody discovers exactly what the
Universe is for and why it is here, it will instantly disappear and be replaced
by something even more bizarre and inexplicable. There is another theory which
states that this has already happened. - Douglas Adams
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