NMR imaging apparatus

Details NMR imaging apparatus NMR imaging apparatus

1985-11-08

1987-10-13

Noland, Tom

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324320, G01R 3322

Patent

active

047001364

ABSTRACT:
An NMR imaging domain is required to have a uniform distribution of static magnetic field. However, it is very difficult to generate a uniform magnetic field for an entire imaging domain, which is usually a spherical domain. The invention advantageously, exploits the requirement that to obtain imaging the static magnetic field need only be uniform as the slicing part. Thus, sufficient uniformity of static magnetic field is obtained in the invention by providing one or more shim coils to a static magnetic field generating coil and selectively controlling current to be applied to each shim coil in relation to data defining the imaging domain.

REFERENCES:
patent: 4585992 (1986-04-01), Maudsley et al.
patent: 4623844 (1986-11-01), Macouski

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