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AssigneeSumotomo Special Metal Co., Ltd.
InventorsToshinobu Miyamoto, Hideya Sakurai, Hiroo Hayashi, Youichi Ohnishi
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A magnetic field generating device for a nuclear magnetic resonance-computerized tomography comprising a pair of permanent magnets magnetized in the same direction with different-polarity poles opposing mutually to define an air gap, whose maximum energy product, (BH).sub.max, is not less than 30 MGOe (240 KJ/m.sup.3), on each of the opposing faces of the permanent magnets a magnetic pole segment being provided which has an annular projection and, as occasion demands, at least one central convex projection inside the annular projection, and the permanent magnets being coupled magnetically by a yoke to generate a magnetic field within the air gap. The present device is able to create a uniform and stable magnetic field, in spite of its small-sized body.
In a magnetic field-generating device which is used in nuclear magnetic resonance-computerized tomography and which includes a yoke and a pair of permanent magnets mounted in said yoke so as to leave an air gap therebetween that contains a magnetic field, said air gap being sufficiently large to enable a portion of a human body to be positioned therein, said pair of permanent magnets being magnetized in the same direction such that the facing surfaces thereof have opposite polarities,
In a magnetic field-generating device which is used in nuclear magnetic resonance-computerized tomography and which includes a yoke and a pair of permanent magnets mounted in said yoke so as to leave an air gap therebetween that contains a magnetic field, said air gap being sufficiently large to enable a portion of a human body to be positioned therein, said pair of permanent magnets being magnetized in the same direction such that the facing surfaces thereof have opposite polarities,
Dependencies are inferred from the claim text.