Magnetic resonance apparatus having an improved RF coil

Details Magnetic resonance apparatus having an improved RF coil Magnetic resonance apparatus having an improved RF coil

1989-04-19

1990-08-28

Williams, Hezron E.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

G01R 3320

Patent

active

049528785

ABSTRACT:
An r.f. transmitter coil is coupled to individually or group-wise independently drivable antenna wire elements, each independently drivable element being driven by its own power amplifier via a sliding contact. An r.f. supply source is coupled to the inputs of the power amplifiers via an input network which provides a phase distribution among the r.f. signals supplied to the amplifiers for the coil to transmit with a circularly polarized r.f. field.

REFERENCES:
patent: 4506224 (1982-08-01), Krause
patent: 4672972 (1987-06-01), Berke
patent: 4682112 (1987-07-01), Beer
patent: 4686473 (1985-07-01), Chesneau et al.
patent: 4712067 (1984-12-01), Roschmann et al.
patent: 4737718 (1988-04-01), Kemner et al.
patent: 4799016 (1989-01-01), Rezvani

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