High dynamic range in NMR data acquisition

Details High dynamic range in NMR data acquisition High dynamic range in NMR data acquisition

1985-07-17

1987-10-27

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324314, 324309, G01R 3320

Patent

active

047032677

ABSTRACT:
In order to increase the efficiency with which NMR information is received, the peak amplitude of the received NMR signal is reduced. This reduction is obtained by varying the phase of the nuclear spin systems which produce the NMR signal. The phase variation may be obtained by applying a spatially inhomogeneous rf pulse. It may alternatively be obtained by applying a tailored rf pulse having either an amplitude spectrum or a phase spectrum which varies with frequency. It may alternatively be obtained by applying gradient pulses. The phase variation may be produced at one or more of several times during the data acquisition. In addition to reducing the peak amplitude of the NMR signal, the phase variation results in reduced noise from an FFT performed during processing.

REFERENCES:
patent: 4291272 (1981-09-01), Hofer et al.
patent: 4528509 (1985-07-01), Radda et al.

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