Process for imaging by nuclear magnetic resonance

Details Process for imaging by nuclear magnetic resonance Process for imaging by nuclear magnetic resonance

1986-12-24

1988-10-25

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324306, G01R 3320

Patent

active

047806745

ABSTRACT:
The invention proposes an imaging process by nuclear magnetic resonance in which a calculated image is given corresponding to the molecular diffusion value at each point of an investigated medium. The diffusion image is obtained by comparing images relative to same sections of the medium and acquired during two excitation sequences, whereof one is not very sensitive to the diffusion and the other is particularly sensitive thereto. These two images undergo comparison in order to produce a diffusion image.

REFERENCES:
patent: 4307344 (1981-12-01), Walters
patent: 4683431 (1987-07-01), Pattany et al.
patent: 4694253 (1987-09-01), Le Roux
J. R. Singer, "NMR Diffusion and Flow Measurements and an Introduction to Spin Phase Graphing", J. Phys. E.; Sci. Instr., vol. 11, 1978.
J. E. Tanner et al., "Restricted Self Diffusion of Protons in Colloidal Systems by the Pulsed-Gradient, Spin-Echo Method", J. Chem. Phys., vol. 49, No. 4, Aug. 15, 1968.

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