Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1999-09-27
2000-11-21
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335216, 324319, H01F 500
Patent
active
061509116
ABSTRACT:
Yoked permanent magnets are disclosed for use in medical applications, particularly permanent magnets for use in magnetic resonance imaging (MRI), magnetic resonance therapy (MRT), and interventional magnetic resonance imaging (IMRI) to produce a volume of substantially uniform magnetic field in a part or organ of a patient's body disposed in an open region between a set of a first and second opposing permanent magnet assemblies, leaving open access to a part or organ of a patient's body. Each of the assemblies consists of a plurality of coaxial concentric permanent magnets. The magnets within each of the assemblies may be spaced-apart along their common axis of symmetry and may be tilted with respect to the common axis of symmetry. The magnets include an open yoke made from a ferromagnetic material for increasing the magnetic field strength within the imaging volume by providing a path for closing magnetic flux lines of the opposing permanent magnet assemblies.
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Katznelson Ehud
Zuk Yuval
Donovan Lincoln
Nguyen Tuyen T.
Odin Technologies Ltd.
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