Open yoke magnet assembly

Details Open yoke magnet assembly Open yoke magnet assembly

2011-03-01

2011-03-01

Arana, Louis M (Department: 2858)

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

C324S320000, C335S296000

Reexamination Certificate

active

07898257

ABSTRACT:
An open yoke MRI apparatus has a set of permanent magnets arranged at the inner surfaces of the yoke and spaced apart from one another. A set of annular permanent magnets is included in each magnet arrangement, including a set with trapezoidal cross-sections to provide a more uniform field and to allow greater access to a patient placed within the magnetic field.

REFERENCES:
patent: 4672346 (1987-06-01), Miyamoto et al.
patent: 4818966 (1989-04-01), Miyamoto et al.
patent: 5107239 (1992-04-01), Abele
patent: 5289152 (1994-02-01), Oguriyama et al.
patent: 6150911 (2000-11-01), Katznelson et al.

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