Nuclear magnetic resonance tomography apparatus

Details Nuclear magnetic resonance tomography apparatus Nuclear magnetic resonance tomography apparatus

1991-11-12

1993-11-02

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

G01R 3320

Patent

active

052587185

ABSTRACT:
In a nuclear magnetic resonance tomography apparatus, having a high-frequency excitation and measuring coil connected with a capacitor to form a resonant circuit, the capacitor being tuned to a desired operating frequency, a circuit is provided for limiting the voltage of the resonant capacitor in a transmission mode. Avoidance of impermissible peak amplitudes is thereby achieved without the necessity of over-dimensioning the components of the resonant circuit.

REFERENCES:
patent: 4620155 (1986-10-01), Edelstein
patent: 4763076 (1988-08-01), Arakawa et al.
patent: 4764726 (1988-08-01), Misic et al.
patent: 4801885 (1989-01-01), Meissner et al.
patent: 4890602 (1989-12-01), Haragashira
Patents Abstract of Japan, P-314, Nov. 17, 1984, vol. 8/No. 252, Japanese Application No. 57-233506.
Siemens Brochure "Surge Arresters" 1985/1986.
"A Versatile Secondary Transmitter Unit for Nuclear Magnetic Resonance Spectroscopy." Retournard et al. Rev. Sci. Instrum., 6(1), Jan., 1990, pp. 69-76.

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