Magnetic field generating device for NMR-CT

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United States of America Patent

PATENT NO 4672346
SERIAL NO

06719820

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Abstract

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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.

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Patent OwnerAddress
SUMOTOMO SPECIAL METAL CO LTD22 5-CHOME KITAHAMA HIGASHI-KU OSAKA CITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayashi, Hiroo Osaka, JP 34 826
Miyamoto, Toshinobu Osaka, JP 4 271
Ohnishi, Youichi Osaka, JP 12 345
Sakurai, Hideya Osaka, JP 9 531

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