Zeugmatography process

Details Zeugmatography process Zeugmatography process

1980-11-19

1983-06-28

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324318, G01R 3308

Patent

active

043908403

ABSTRACT:
In the exemplary embodiments, the imaging of the interior of bodies is rendered possible by means of nuclear magnetic resonance. Up to the present time, the known methods have such a small signal-to-noise ratio that the medical application is uncertain on account of the necessary long measuring duration and the thus unavoidable body movement. The disclosed method permits a significant raising of the signal-to-noise ratio and thus renders possible a shortening of the measuring time for the purpose of preparing medically utilizable images. For this purpose, the disclosure provides, through inversion of the nuclear magnetization by means of "fast adiabatic passage" in the primary field direction and simultaneous detection of the magnetization change by a longitudinal field detector, the attainment of a spatially resolved examination of extensive objects by means of nuclear magnetic resonance (NMR, entire body-zeugmatography) with substantially higher constant field intensities than previously. The signal-to-noise ratio can thereby be increased in the manner desired, and the measuring time can be shortened. The disclosed zeugmatography method is therefore also suitable for medical examinations.

REFERENCES:
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patent: 4290019 (1981-09-01), Hutchinson
patent: 4307343 (1981-12-01), Likes
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