Magnetic resonance apparatus with uncoupled RF coils

Details Magnetic resonance apparatus with uncoupled RF coils Magnetic resonance apparatus with uncoupled RF coils

1989-04-14

1990-08-28

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324318, G01R 3320

Patent

active

049528793

ABSTRACT:
In a magnetic resonance apparatus coils of an rf coil system are incorporated for detection of magnetic resonant signals at mutually different frequencies in resonant circuits having a zero impedance for the natural frequency and an infinite impedance for a given deviating frequency. In the switching circuits a coaxial cable is used having a length which has a reactance in parallel with a second reactance to form a tuned circuit adapted to the desired frequency.

REFERENCES:
patent: 4129822 (1978-12-01), Traficante
patent: 4691164 (1987-09-01), Haragashira
patent: 4700137 (1987-10-01), Yoda et al.
patent: 4712069 (1987-12-01), Kommer et al.
patent: 4739269 (1988-04-01), Kopp
patent: 4812764 (1989-03-01), Bendall
patent: 4816765 (1989-03-01), Boskamp
Rajan et al., "A Novel Double-Tuned Circuit for in Vivo NMR" Journal of Magnetic Resonance, vol. 74, No. 1, Aug. 1987, pp. 147-154.
Schnall et al., "The Application of Overcoupled Tank Circuits to NMR Probe Design": Journal of Magnetic Resonance, vol. 67, No. 1, Mar. 1986, pp. 129-134.
Jiang et al., "An Efficient Double-Tuned C/H Probe Circuit for CP/MAS NMR and Its Importance in Linewidths" Journal of Magnetic Resonance, vol. 71, No. 3, 2/15/87, pp. 485-494.

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