Nuclear magnetic resonance apparatus

Details Nuclear magnetic resonance apparatus Nuclear magnetic resonance apparatus

1981-05-19

1984-01-03

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3308

Patent

active

044244886

ABSTRACT:
In Nuclear Magnetic Resonance (NMR) imaging systems it is known to excite resonance in a slice of a body and to sample the resonance signals in the presence of a field gradient across the slice. The gradient field is pulsed. Where such systems analyse the signal to be for many sets of strips in the slice, each set in a different direction, for analysis by techniques used in computerized tomography (CT) X-ray systems, it is now proposed that the field gradient pulsed should reach a maximum after not more than one third of its total duration to balance the spatial frequency emphasis (FIG. 1e) in the CT processing.

REFERENCES:
patent: 4021726 (1977-05-01), Garroway
patent: 4307343 (1981-12-01), Likes
patent: 4355282 (1982-10-01), Young

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