APPARATUS AND METHOD FOR DETECTING THE PRESENCE OF A PARTICLE OF A FERROMAGNETIC METAL IN A PACKAGING OF A PARAMAGNETIC MATERIAL
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United States of America Patent
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app pub date -
Mar 23, 2012
filing date -
Aug 12, 2010
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Abandoned
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Abstract
It is disclosed a method for checking a packaged product in order to know if it is free of particles of a ferromagnetic metal or contains a particle of a ferromagnetic metal. The packaged product comprises a packaging comprising a paramagnetic and/or diamagnetic metal. The method comprises: providing a static magnetic field B0; providing a phantom body in the field B0; plunging the packaged product into the field B0; acquiring a number of magnetic resonance signals generated by elementary volumetric portions (voxels) of a slice of the phantom body; on the basis of the magnetic resonance signals, generating an image of the slice; if the image does not show an artefact, declaring that the packaged product is free of particles of a ferromagnetic metal; and if the image shows an artefact, declaring that the packaged product contains a particle of a ferromagnetic metal.
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