Magnetic resonance imaging

Electricity: measuring and testing – Particle precession resonance – Spectrometer components

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324320, G01R 3320

Patent

active

050235559

ABSTRACT:
The invention provides a magnetic resonance imaging apparatus having a primary field generating means for generating a substantially uniform magnetic field, wherein that said primary field generating means is arranged in use to generate a magnetic field the field direction of which varies with time, e.g. a rotating field. The varying field operates to average out from the magnetic field experienced by the sample being imaged at least some of the external perturbing magnetic fields so reducing the sensitivity of the apparatus to such external fields.

REFERENCES:
patent: 2947920 (1960-08-01), Hall
patent: 4425547 (1984-01-01), Sugimoto
patent: 4695801 (1987-09-01), Arakawa

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