Magnetic resonance apparatus comprising a bird-cage RF coil

Details Magnetic resonance apparatus comprising a bird-cage RF coil Magnetic resonance apparatus comprising a bird-cage RF coil

1992-12-09

1994-09-13

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, G01R 3320

Patent

active

053472209

ABSTRACT:
A magnetic resource apparatus includes a mainly cylindrical RF coil (9) having a longitudinal directed central axis (33) and symmetry plane (35) which contains the central axis and a reference plane (37). The reference plane extends perpendicularly to the symmetry plane and also contains the central axis. The coil (9) has a number of rod conductors (39) which extend, parallel to the central axis (33), across a mainly cylindrical surface, and loop conductors (41) which extend around the central axis near the ends of the rod conductors, the length of the rod conductors (39) situated near the symmetry plane (35) being greater than that of the rod conductors situated near the reference plane (37). In order to enable sharp and low-noise images to be made of the neck of a patient, the rod conductors (39) which are situated near the symmetry plane (35) and to one side of the reference plane (37) have a length which is greater than that of the rod conductors situated near the symmetry plane and to the other side of the reference plane.

REFERENCES:
patent: 4737718 (1988-04-01), Kemner et al.
patent: 4784146 (1988-11-01), Mancuso et al.
patent: 4820985 (1989-04-01), Eash
patent: 4879516 (1989-11-01), Mehdizadeh et al.
patent: 5045792 (1991-09-01), Mehdizadeh

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