Nuclear magnetic resonance imaging method

Details Nuclear magnetic resonance imaging method Nuclear magnetic resonance imaging method

1990-03-13

1991-09-03

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324312, G01B 3320

Patent

active

050457918

ABSTRACT:
A three-dimensional NMR imaging method using phase encoding field gradients along two direction is disclosed. The measurement of an NMR signal is repeated in such a manner that among all combinations of a plurality of magnitudes of gradient prepared for the phase encoding field gradient along one of the two directions and a plurality of magnitudes of gradient prepared for the phase encoding field gradient along the other direction, combinations in which the magnitude of the phase encoding field gradient along the one direction is not larger than a predetermined value, are selected preceding the remaining combinations. A first image reconstruction processing is performed for data trains acquired on the basis of the precedently selected combinations, thereby obtaining a crude image. The crude image is displayed to confirm whether the location of measurement is proper or not. After the confirmation, the remaining combinations are successively selected to continue the measurement of the NMR signal and a second image reconstruction processing is performed for all of data trains acquired, thereby obtaining a detailed image.

REFERENCES:
patent: 4506222 (1987-03-01), Edelstein et al.
patent: 4707658 (1987-11-01), Frahm et al.

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