Remotely adjustable MRI RF coil impedance matching circuit with

Details Remotely adjustable MRI RF coil impedance matching circuit with Remotely adjustable MRI RF coil impedance matching circuit with

1988-01-07

1989-05-02

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

333 32, G01R 3320

Patent

active

048272191

ABSTRACT:
The RF coil and transmission line of a Magnetic Resonance Imaging (MRI) system are remotely tuned for variation from matched impedance conditions (e.g., as caused by variable loading of the RF coil by objects to be imaged which vary from an assumed median object) via a pair of series-connected over-coupled parallel-resonant circuits, each of which includes an adjustable capacitance.

REFERENCES:
patent: 3019335 (1962-01-01), Brilliant
patent: 4545384 (1985-10-01), Kawachi
patent: 4641097 (1987-02-01), Bottomley et al.
patent: 4691164 (1987-09-01), Haragashira

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