Method and system for controlling an RF pulse in a magnetic reso

Details Method and system for controlling an RF pulse in a magnetic reso Method and system for controlling an RF pulse in a magnetic reso

1989-05-30

1991-10-01

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324309, G01R 3320

Patent

active

050537091

ABSTRACT:
In an MRI apparatus, the amplification factor of a high-frequency amplifier incorporated in the transmission system for generating RF pulses is automatically controlled in accordance with the input/output characteristic between the signal input to the amplifier and the signal output therefrom. Hence, the amplifier can perform a linear amplification of the input signal, regardless of the level of the input signal. Hence, the transmission system can generate RF pulses having a spectral distribution representing a predetermined intensity in only a specified frequency domain, using the signal output from the amplifiers.

REFERENCES:
patent: 4528985 (1985-07-01), Macovski
patent: 4694254 (1987-09-01), Vatis et al.
patent: 4739268 (1988-04-01), Fox

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