Method of reducing MR image artefacts in off-center images

Details Method of reducing MR image artefacts in off-center images Method of reducing MR image artefacts in off-center images

1987-07-14

1989-07-18

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

G01R 3320

Patent

active

048496987

ABSTRACT:
A method is proposed for the elimination of the effect of coherent interference signals which give rise to image artefacts in off-center imaging which usually requires roll correction in order to obtain a correct image. To this end, the image is shifted independently with respect to the artefact signal over an arbitrary distance which depends on the isocentric shift. The method is advantageous for off-center imaging where usually surface coils are used. A band of interference signals in the phase encoding direction can thus be shifted to the edge of the image.

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"Proton NMR Tomography", Locher, P. R., Philips Technical Review, vol. 41, 1983/1984, No. 3, p. 73 of seq.

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