NMR imaging technique

Details NMR imaging technique NMR imaging technique

1983-04-25

1985-05-28

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3308

Patent

active

045203164

ABSTRACT:
A method of obtaining an NMR spectrum for at least a portion of a specimen slice is provided. The method comprises acquiring a number of projections of the specimen slice and shifting the projections by .DELTA.f for any point of interest. The shifted projections are then summed or compared to produce a resultant point spectrum. Preferably, shifted projections in each of a plurality of selected sets thereof are compared so as to produce a plurality of resultant spectra for the point which are used to produce a first iterated point spectrum. Additional stages of iteration are provided to minimize the effect of artifacts which comprises comparing aligned corresponding positions on an i iterated spectrum with a previously uncompared resultant point spectrum, so as to produce an i+1 iterated spectrum for the point, and repeating the foregoing a plurality of times, in each case using the iterated spectrum from the previous iteration as the i iterated spectrum.

REFERENCES:
patent: 4362993 (1982-12-01), Young
patent: 4409550 (1983-10-01), Fossel
patent: 4422042 (1983-12-01), Sugimoto
patent: 4424488 (1984-01-01), Hounsfield
patent: 4425547 (1984-01-01), Sugimoto
patent: 4429277 (1984-01-01), Sugimoto
patent: 4443760 (1984-04-01), Edelstein

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