Methods and apparatus for NQR testing

Details Methods and apparatus for NQR testing Methods and apparatus for NQR testing

1998-04-30

2000-08-08

Oda, Christine

Electricity: measuring and testing

Particle precession resonance

324307, 324322, G01V 300

Patent

active

061006882

ABSTRACT:
A method and apparatus for imaging within a sample space an object containing quadrupolar nuclei comprises irradiating the object to excite nuclear quadrupole resonance, applying to the object a magnetic field gradient having a profile Bo(x) such that the square of the profile (Bo(x))2 varies linearly with distance (x), detecting resonance response signals from the nuclei, and deriving an image from the response signals. A method of and apparatus for nuclear quadrupole resonance testing an object, and a method of and apparatus for detecting the presence of a particular substance containing a given species of quadrupolar nucleus, are also disclosed.

REFERENCES:
patent: 4591789 (1986-05-01), Glover et al.
patent: 5122748 (1992-06-01), Oh et al.
patent: 5233300 (1993-08-01), Buess et al.
patent: 5457385 (1995-10-01), Sydney et al.
patent: 5583437 (1996-12-01), Smith et al.
patent: 5814989 (1998-09-01), Smith et al.
E. Rommel et al., "Communications-Rotating Frame NQR Imaging," Journal of Magnetic Resonance 91, 1991, pp. 630-636.
S. Matsui et al., "Communicatons-An NQR Imaging Experiment on a Disordered Solid," Journal of Magnetic Resonance 88, 1990, pp. 186-191.
V.S. Grechishkin, "AdiaBatic Demagnetization and Two-Frequency Methods in .sup.14 N Quadrupole Resonance Spectroscopy," Advances in Nuclear Quadrupole Resonance, vol. 5, 1983, pp. 1-13.
T. Hirschfeld, et al., "Short Range Remote NQR Measurements," Journal of Molecular Structure, 58, 1980, pp. 63-77.
Sergio Pissanetzky, "Zeeman effect of .sup.14 N nuclear quadrupole resonance with polycrystaline samples," Journal of Chemical Physics, vol. 59, No. 8, Oct. 15, 1972, pp. 4197-4207.
P.C. Lauterbur, "Image Formation By Induced Local Interactions: Examples Employing Nuclear Magnetic Resonance," Nature, vol. 242, Mar. 16, 1973, pp. 190-191.
Buess, et al., "NQR Detection Using a Meanderline Surface Coil", Journal of Magnetic Resonance 92, 1991, pp. 348-362.

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